在供水系统中，恒压供水是指在供水网系中用水量发生变化时，出口压力保持不变的供水方式。
In water supply system, water supply in constant pressure means that terminal pressure keeps constant all the time when the quantity of dispended water varies.
上层建筑压缩空气管系(供水管、消防管、烟雾探测管)密性试验。
Superstructure compressed air (water supply, fire fighting, smoke detection) piping to be done air-tightness test.
白垩系承压水是四平市重要的供水水源地，水量中等。
The Cretaceous confined water is an important water source in Siping city, which contains middle water capacity.
农田大水漫灌现象仍然存在，渠系灌溉水损失很大，有效供水率低。
Farmland flood flooding phenomenon still exists, canal irrigation water loss is large, effective supply rate is low.
农田大水漫灌现象仍然存在，渠系灌溉水损失很大，有效供水率低。
Farmland flood flooding phenomenon still exists, canal irrigation water loss is large, effective supply rate is low.
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