是在進(jìn)出口壓差1MPa情況下的數(shù)據(jù)，而一個(gè)液壓系統(tǒng)的進(jìn)出口壓差是由系統(tǒng)壓力和負(fù)載力量決定的，往往不是一個(gè)恒定值，即使是恒定值（比如是固定負(fù)載）也往往不是1MPa，因此不能用名義流量來(lái)確定負(fù)載運(yùn)行速度，要經(jīng)過(guò)計(jì)算來(lái)確定通過(guò)閥產(chǎn)品的壓差后才能最終確定通過(guò)閥的實(shí)際流量。R900925553 4WRA6EA07-22/G24N9K4/V
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