单流道叶轮泵 single channel impeller pump
单流连铸机 single-strand casting machine ; strand casting machine ; single strand casting machine
单流式蒸汽机 uniflow engine ; uniflow steam engine
单流式冷凝器 uniflux condenser ; uniflow type condenser ; single-pass condenser ; straight condenser
单流阀 ball-and-seat ; check valve
单流机 uniflow engine
单流束水表 single-jet water meter
单流的 single-flow ; uniflow ; single-pass
单流式锅炉 single flow type boiler
本控制阀包括油嘴和单流阀，单流阀包括阀球和阀座。
The control valve comprises an oil nozzle and a check valve. The check valve comprises a valve ball and a valve seat.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
对损坏的单流阀能进行及时的检查、更换，对油井防倒灌效果明显。
A damaged check valve can be immediately checked and replaced, thereby achieving obvious result in preventing the liquid from returning into the oil Wells.
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