At pump start before the shell and the water pump tube must be filled with water, the air This is because there is existence, the population vacuum pump can not create and maintain.
水泵在启动以前，泵壳和吸水管内必须先充满水，这是因为有空气存在的情况下，泵吸人口真空无法形成和保持。
Suggestion : according to the water cubage of aquarium ( pool ) and max. flux if pump , and the size of tube diameter, cut the pagoda type hose joint to match if.
建议：宝塔式水管接头，可根据水族箱（池）的水容积及水泵最高流量，结合管径大小加以切除配套。
Analyses the effect of U-tube diameter, tube quantity in each hole, and the design inlet water temperature of a heat pump unit on the heat exchange capability.
分析了U形管管径、单孔内u形管数量及热泵机组设计进水温度对换热器换热效果的影响。
The design of infiltration ditch contains the obtaining water tube, anti-filter layer, well, pump house and other accessory building.
渗渠工程设计主要包括水平集水管、反滤层、导水管、集水井、泵房和其他附属构筑物等。
Die from the back of high temperature water through the pipe back to mold temperature machine, the pump pressure delivered to the heater, the heating tube is sent to die, so the cycle.
从模具囬来的高温水经过管路囬到模温机，经泵浦加压后输送到加热器，通过电热管加热送至模具，如此循环。
The water-outlet of the water pump connects with the water-inlet of the water track by a water tube.
水泵的出水口通过水管与水轨的进水口连通；
Methods An inclined tube well collecting percolating ground water with powerful pump in the water-bearing stratum in the depth of 30 meters below the riverbed of Huanghe River was built.
方法打斜管井深入黄河河床以下30 m处，以大功率水泵抽水，经加氯消毒后供生活饮用。
Methods An inclined tube well collecting percolating ground water with powerful pump in the water-bearing stratum in the depth of 30 meters below the riverbed of Huanghe River was built.
方法打斜管井深入黄河河床以下30 m处，以大功率水泵抽水，经加氯消毒后供生活饮用。
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