简便计算.4.7*1.6+4.7*2.*0.085.87-0.18-0.826.45-(3.45-1.9)6.69+3.22+4.311.25*32*0.2)4.68*99+4.681.1+9.77+2.9+0.230.1+0.01+1+0.99+0.93.72-(0.72+1.3)2.5*3.1+2.4*3.1+5.1*3.10.25*48*1.+78*2.7+78(2.5+2.5+2.5)*0.41.3/2.58.9*9._作业帮
拍照搜题，秒出答案
简便计算.4.7*1.6+4.7*2.*0.085.87-0.18-0.826.45-(3.45-1.9)6.69+3.22+4.311.25*32*0.2)4.68*99+4.681.1+9.77+2.9+0.230.1+0.01+1+0.99+0.93.72-(0.72+1.3)2.5*3.1+2.4*3.1+5.1*3.10.25*48*1.+78*2.7+78(2.5+2.5+2.5)*0.41.3/2.58.9*9.
简便计算.4.7*1.6+4.7*2.4125*18.9*0.085.87-0.18-0.826.45-(3.45-1.9)6.69+3.22+4.311.25*32*0.25125/(50/8)4.68*99+4.681.1+9.77+2.9+0.230.1+0.01+1+0.99+0.93.72-(0.72+1.3)2.5*3.1+2.4*3.1+5.1*3.10.25*48*1.2578*6.3+78*2.7+78(2.5+2.5+2.5)*0.41.3/2.58.9*9.948*0.2525.07-4.984.36+7.8+3.64+2.2(0.8*0.8*0.8)*1.25(1.25+1.25+1.25)*19*84.95-1.89-0.11-0.9533*12.8+66*12.8+12.88*0.5-8*0.3757.55-(3.55-2.8)7.6-3.22-1.783.89+9.2+2.11+0.85.6*0.8+5.6*0.7+5.6*0.528.9+32.2+0.1+0.89.88-(3.88-1.98)3.6*2.5+2.2*2.5+3.2*2.53.2*9.99.85-1.21-3.79-0.859+8*(2.2-1.25)7.6-2.98-0.022.6*9.8+9.8*7.2+0.2*9.83.2+9.6+4.8+1.49.8-3.25-1.75-0.83.2*0.25*0.25*0.25(好的在加150财富悬赏）
4.7*1.6+4.7*2.4=4.7*(1.6+2.4)=18.8125*18.9*0.08=125*0.08*18.9=1895.87-0.18-0.82=5.87-(0.18+0.82)=4.876.45-(3.45-1.9)=6.45-1.45=56.69+3.22+4.31=6.69+4.31+3.22=14.221.25*32*0.25=1.25*8=10125/(50/8)=(125*8)/50=204.68*99+4.68=4681.1+9.77+2.9+0.23=1.1+2.9+9.77+0.23=140.1+0.01+1+0.99+0.9=3.72-(0.72+1.3)2.5*3.1+2.4*3.1+5.1*3.10.25*48*1.2578*6.3+78*2.7+78(2.5+2.5+2.5)*0.41.3/2.58.9*9.948*0.2525.07-4.984.36+7.8+3.64+2.2(0.8*0.8*0.8)*1.25(1.25+1.25+1.25)*19*84.95-1.89-0.11-0.9533*12.8+66*12.8+12.88*0.5-8*0.3757.55-(3.55-2.8)7.6-3.22-1.783.89+9.2+2.11+0.85.6*0.8+5.6*0.7+5.6*0.528.9+32.2+0.1+0.89.88-(3.88-1.98)3.6*2.5+2.2*2.5+3.2*2.53.2*9.99.85-1.21-3.79-0.859+8*(2.2-1.25)7.6-2.98-0.022.6*9.8+9.8*7.2+0.2*9.83.2+9.6+4.8+1.49.8-3.25-1.75-0.83.2*0.25*0.25*0.25简算：（2/5-1/3）÷5/6 、7.5+2.5÷0.5、（5/6+1/4）×24、4-5/13÷15/26-1/13、8/9+6/7×2/3+3/7_百度知道
简算：（2/5-1/3）÷5/6 、7.5+2.5÷0.5、（5/6+1/4）×24、4-5/13÷15/26-1/13、8/9+6/7×2/3+3/7
5-2&#47（4/2+2/3）÷（1&#47
！！要过程
提问者采纳
5+5=12;39=4-29/26-1/3）)=(24-20）÷(15+20）=4/7×2/257;9+6/3+3/6+1/5-2/4）×24=5&#47（2/7=8/3-1&#47.5=7.5+2;13=4-2/9+4/13=4-26/6=（2&#47.5（5/25-2/15-1/25-10/9+1=1又8/5-1/5=2/7=8/13×26/5=12/5-1/39-3/7+3/9（4/6×24+1/2+2/3×6/25=2/3）)÷(30×（1/5×6/13÷15&#47.5+2;3）×6/5=12/4×24=20+6=264-5/2+2/13=4-5/3）=(30×(4/5-1/3）÷5/39=3又10/3）÷（1&#47.5÷0;398&#47.5×2=7;5-2&#47
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<img id="zhantai_logo" src=/1/250.jpg alt=上海大江工业泵厂（总厂） onload="120<=this.width?this.width=120:this.90
上海大江工业泵厂（总厂）
潜水电泵,齿轮油泵,锅炉给水泵,螺杆浓浆泵,旋涡泵
您所在位置：&>>>&&&&D/DG12-25*6锅炉给水泵
D/DG12-25*6锅炉给水泵
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上海大江工业泵厂（总厂）
【简单介绍】
D、DG型泵是卧式单吸多级节段式离心泵。供输送清水（含杂质量小于1%，颗粒度小于0.1mm）或物理化学性质类似于水的 D、DG型泵是卧式单吸多级节段式离心泵。供输送清水（含杂质量小于1%，颗粒度小于0.1m其它液体。D型泵输送介质温度小于80℃，适用于矿山排水、油田注水、工厂和城市给、排水等场合。油田注水泵根据介质的腐蚀性，泵采用不同的材质。DG型泵输送介质温度小于105℃，适用于各种锅炉给水。
【详细说明】
产品概述：&&&&&&&D、DG型泵是卧式单吸多级节段式离心泵。供输送清水（含杂质量小于1%，颗粒度小于0.1mm）或物理化学性质类似于水的其它液体。D型泵输送介质温度小于80℃，适用于矿山排水、油田注水、工厂和城市给、排水等场合。油田注水泵根据介质的腐蚀性，泵采用不同的材质。DG型泵输送介质温度小于105℃，适用于各种锅炉给水。性能范围：流量Q=6.3~450m3/h&扬程H=50~600m型号意义：DG 46 - 5 0& 7DG 锅炉给水泵46 泵设计点流量m3/h50泵设计点单级扬程m7泵的级数（即叶轮数型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&6-25 &3&&DG29503.751.0476.5332.375.52.0&&6.31.7575452.362.07.52.0873.5473.192.5&&D&6-25 &4&&DG29503.751.04102333.167.52.0&&6.31.75100453.812.07.52.0898474.262.5&&D&6-25 &5&&DG29503.751.04127.5333.957.52.0&&6.31.75125454.772.07.52.08122.5475.322.5&&D&6-25 &6&&DG29503.751.04153334.37112.0&&6.31.75150455.722.07.52.08147476.392.5&&D&6-25 &7&&DG29503.751.04178.5335.52112.0&&6.31.75175456.672.07.52.08171.5477.452.5&&D&6-25 &8&&DG29503.751.04204336.31152.0&&6.31.75200457.632.07.52.08196478.522.5&&D&6-25 &9&&DG29503.751.04229.5337.10152.0&&6.31.75225458.582.07.52.08220.5479.582.5&&D&6-25 &10&&DG29503.751.04255337.8918.52.0&&6.31.75250459.532.07.52.082454710.652.5&&D&6-25 &11&&DG29503.751.04280.5338.6818.52.0&&6.31.752754510.52.07.52.08269.54711.712.5&&D&6-25 &12&&DG29503.751.04306339.4718.52.0&&6.31.753004511.442.07.52.082944712.782.5型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率& &&&&D&12-25 &3&&DG29507.52.0884.6443.937.52.0&&12.53.4775544.732.015.04.1769535.322.5&&D&12-25 &4&&DG29507.52.08112.8445.24112.0&&12.53.47100546.302.015.04.1792537.092.5&&D&12-25 &5&&DG29507.52.08141446.55112.0&&12.53.47125547.882.015.04.17115538.862.5&&D&12-25 &6&&DG29507.52.08169.2447.85152.0&&12.53.47150549.462.015.04.171385310.642.5&&D&12-25 &7&&DG29507.52.08197.4449.16152.0&&12.53.471755411.02.015.04.17615312.412.5&&D&12-25 &8&&DG29507.52.08225.64410.4718.52.0&&12.53.472005412.612.015.04.171845314.182.5&&D&12-25 &9&&DG29507.52.08253.84415.9518.52.0&&12.53.472255413.092.015.04.172075315.762.5&&D&12-25&10&&DG29507.52.082824417.73222.0&&12.53.472505414.42.015.04.172305317.732.5&&D&12-25&11&&DG29507.52.08310.24414.4222.0&&12.53.472755417.342.015.04.172535319.52.5&&D&12-25&12&&DG29507.52.08338.44415.7302.0&&12.53.473005418.92.015.04.172765321.32.5型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&25-30&3&&DG2950154.17102508.33152.2&&256.9490629.882.2308.3382.56310.72.6&&D&25-30&4&&DG2950154.171365011.1118.52.2&&256.941206213.12.2308.331106314.262.6&&D&25-30&5&&DG2950154.171705013.89222.2&&256.941506216.472.2308.33137.56317.832.6&&D&25-30&6&&DG2950154.172045016.67302.2&&256.941806219.772.2308.331656321.42.6&&D&25-30&7&&DG2950154.172385019.44302.2&&256.942106223.12.2308.33192.56324.962.6&&D&25-30&8&&DG2950154.172725022.22372.2&&256.942406226.42.2308.332206328.532.6&&D&25-30&9&&DG2950154.173065025.0372.2&&256.942076229.652.2308.33247.56332.12.6&&D&25-30&10&&DG2950154.173405027.8452.2&&256.943006232.92.2308.332756335.72.6型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&25-50&3&&DG2950154.16154.544154.5302.4&&256.94150541502.7287.78144541442.8&&D&25-50&4&&DG2950154.1620644206302.4&&256.94200542002.7287.78192541922.8&&D&25-50&5&&DG2950154.16157.544257.5372.4&&256.94250542502.7287.78240542402.8&&D&25-50&6&&DG2950154.1630944309452.4&&256.94300543002.7287.78288542882.8&&D&25-50&7&&DG2950154.16360.544360.5552.4&&256.94350543502.7287.78336543362.8&&D&25-50&8&&DG2950154.1641244412752.4&&256.94400544002.7287.78384543842.8&&D&25-50&9&&DG2950154.16463.544463.5752.4&&256.94450544502.7287.78432544322.8&&D&25-50&10&&DG2950154.1651544515752.4&&256.94500545002.7287.78480544802.8&&D&25-50&11&&DG2950154.1656644566902.4&&256.94550545502.7287.78528545282.8&&D&25-50&12&&DG2950154.16618446181002.4&&256.94600546002.7287.78576545762.8型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&46-30&3&&DG2950308.331026413.02222.4&&4612.8907016.113.05515.3816817.844.6&&D&46-30&4&&DG2950308.331366417.36302.4&&4612.81207021.483.05515.31086823.794.6&&D&46-30&5&&DG2950308.331706421.7372.4&&4612.81507026.853.05515.31356829.744.6&&D&46-30&6&&DG2950308.332046426.04372.4&&4612.81807032.213.05515.31626835.684.6&&D&46-30&7&&DG2950308.332386430.38452.4&&4612.82107037.583.05515.31896841.634.6&&D&46-30&8&&DG2950308.332746434.72552.4&&4612.82407042.953.05515.32166847.584.6&&D&46-30&9&&DG2950308.333066439.06552.4&&4612.82707048.323.05515.32436853.534.6&&D&46-30&10&&DG2950308.333406443.4752.4&&4612.83007053.693.05515.32706859.474.6型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&46-50&3&&DG2950308.33166.55425.19372.5&&4612.81506329.832.85515.31386432.33.2&&D&46-50&4&&DG2950308.332225433.59452.5&&4612.82006339.772.85515.31846443.063.2&&D&46-50&5&&DG2950308.33277.55441.98552.5&&4612.82506349.712.85515.32306453.833.2&&D&46-50&6&&DG2950308.333335450.38752.5&&4612.83006359.652.85515.32766464.593.2&&D&46-50&7&&DG2950308.33388.55458.78752.5&&4612.83506369.62.85515.33226475.363.2&&D&46-50&8&&DG2950308.334405467.18902.5&&4612.84006379.542.85515.33686486.123.2&&D&46-50&9&&DG2950308.33499.55475.571102.5&&4612.84506389.482.85515.34146496.893.2&&D&46-50&10&&DG2950308.335555483.971102.5&&4612.85006399.422.85515.346064107.663.2&&D&46-50&11&&DG2950308.33610.55492.371322.5&&4612.855063109.362.85515.350664118.423.2&&D&46-50&12&&DG2950308.3366654100.81322.5&&4612.860063119.32.85515.355264129.23.2型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&85-45&2&&DG29505515.31026324.25373.2&&8523.6907228.944.210027.8787030.355.2&&D&85-45&3&&DG29505515.31536336.38553.2&&8523.61357243.44.210027.81177045.525.2&&D&85-45&4&&DG29505515.32046348.5753.2&&8523.61807257.874.210027.81567060.75.2&&D&85-45&5&&DG29505515.32556360.63903.2&&8523.62557272.344.210027.81957075.865.2&&D&85-45&6&&DG29505515.33066372.751103.2&&8523.62077286.814.210027.82347091.045.2&&D&85-45&7&&DG29505515.33576384.881323.2&&8523.631572101.34.210027.827370106.25.2&&D&85-45&8&&DG29505515.34086397.01323.2&&8523.636072115.74.210027.831270121.45.2&&D&85-45&9&&DG29505515.345963109.11603.2&&8523.640572130.24.210027.835170136.65.2型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&155-30&2&&DG148010027.8656427.66553.2&&15543607533.773.918551.4557536.954.8&&D&155-30&3&&DG148010027.897.56441.2753.2&&15543907550.653.918551.482.57555.424.8&&D&155-30&4&&DG148010027.81306455.32903.2&&155431207567.543.918551.41107573.94.8&&D&155-30&5&&DG148010027.8162.56469.151103.2&&155431507584.423.918551.4137.57592.374.8&&D&155-30&6&&DG148010027.81956482.981323.2&&1554318075101.33.918551.416575110.84.8&&D&155-30&7&&DG148010027.8227.56496.811603.2&&1554321075118.23.918551.4192.575129.34.8&&D&155-30&8&&DG148010027.826064110.61803.2&&1554324075135.13.918551.422075147.84.8&&D&155-30&9&&DG148010027.8292.564124.51803.2&&15543270751253.918551.4247.575166.34.8&&D&155-30&10&&DG148010027.832564138.32253.2&&1554330075168.83.918551.427575184.74.8型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&155-67&3&&DG295010027.82286497.01323.2&&1554320172114.75.018551.417772123.96.6&&D&155-67&4&&DG295010027.830464129.41853.2&&1554326872152.95.018551.423672165.16.6&&D&155-67&5&&DG295010027.838064161.72203.2&&1554333572191.15.018551.429572206.46.6&&D&155-67&6&&DG295010027.8456641942753.2&&1554340272229.35.018551.435472247.76.6&&D&155-67&7&&DG295010027.853264226.43503.2&&1554349672267.55.018551.4413722896.6&&D&155-67&8&&DG295010027.860864258.73503.2&&1554353672305.75.018551.447272330.36.6&&D&155-67&9&&DG295010027.868464291.14403.2&&15543603723445.018551.453172371.66.6型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&280-43&2&&DG148018551.4946968.61103.0&&28077.8867785.174.735593.1767592.46.0&&D&280-43&3&&DG148018551.4141691031503.0&&28077.812977127.74.735593.111475138.76.0&&D&280-43&4&&DG148018551.418869137.32303.0&&28077.817277170.34.735593.115275184.96.0&&D&280-43&5&&DG148018551.423569171.63003.0&&28077.821577212.94.735593.119075231.16.0&&D&280-43&6&&DG148018551.428269205.93003.0&&28077.825877255.54.735593.122875277.36.0&&D&280-43&7&&DG148018551.432969240.23503.0&&28077.830177298.14.735593.126675323.66.0&&D&280-43&8&&DG148018551.437669274.54103.0&&28077.834477304.74.735593.130475369.86.0&&D&280-43&9&&DG148018551.442369308.94303.0&&28077.838777383.24.735593.1342754166.0型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&280-65&6&&DG148018551.4408613375002.8&&28077.839073407.43.733593.137275452.55.0&&D&280-65&7&&DG148018551.447661393.16802.8&&28077.845573475.33.733593.1434755285.0&&D&280-65&8&&DG148018551.454461449.36802.8&&28077.852073543.23.733593.149675603.35.0&&D&280-65&9&&DG148018551.461261505.58502.8&&28077.858573611.13.733593.155875678.85.0&&D&280-65&10&&DG148018551.468061561.68502.8&&28077.8650736793.733593.162075754.25.0型号转速n(r/min)流量 Q扬程H(m)效率&(%)功率(KW)必需汽蚀余量(NPSH)r(m)叶轮直径(mm)质量(kg)立方米/时L/S辅功率Pa电机功率&&D&450-60&3&&DG148033593.119572247.13603.8&&45012518079279.24.950013917178298.56.0&&D&450-60&4&&DG148033593.126072329.45003.8&&45012524079372.34.9500139228783986.0&&D&450-60&5&&DG148033593.132572411.86803.8&&45012530079465.44.950013928578497.26.0&&D&450-60&6&&DG148033593.139072494.26803.8&&45012536079558.54.9500139342785976.0&&D&450-60&7&&DG148033593.144572576.58503.8&&45012542079651.54.950013939978696.56.0&&D&450-60&8&&DG148033593.152072658.98503.8&&45012548079744.64.9500139456787966.0&&D&450-60&9&&DG148033593.158572741.210503.8&&45012554079837.74.950013951378895.66.0&&D&450-60&10&&DG148033593.165072823.610503.8&&45012560079930.84.950013957078995.16.0&
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