有效: effective; valid; efficaciou ...的: 4次方是 The fourth power of 2 i ...净: clean正: the first month of the lunar ...吸: inhale; breathe in; draw入: enter压: press; push down; hold down; ...头: 5点就得动身 have to start before ...净正吸入压头: npsh（net positive suction head)需用净正吸入压头: required net positive suction head正吸入压头: positive suction head有效净压吸入压头: available net positive suction head净正吸人压头: npsh净正吸引压头: net positive suction head泵吸入压头: suction head of pump; suction lift of pump吸入压头: inlet head; intake head; net positive suction head; suction pressure真空吸入压头: negative suction head净正吸高差: net positive suction head净正吸升水头: net positive suction head; npsh吸入压力: intake pressure; suction pre ure; suction pressure; suctionpressure吸入压力表: suction gauge额定吸入压力: rated boost pressure吸入压力调节: backpressure regulation吸入压力损失: suction-pressure loss最大吸入压力: maximum suction pressure; suction pressure maximum
