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.
第二，单流阀效应引起孔隙压力下降，割理闭合，导致侵入的压裂液滞留其中。
The second is unilateral flow bring about the pore press lower, cleats close, and fracturing fluid deeped in it will settle.
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