词汇	semi-open valve
释义	semi-open valve 半开放活瓣
随便看	trade decision trade declaration trade declaration system trade defence instruments trade defenee trade deficit trade-deficit trade deficit in service industry Trade deficit or surplus trade frictions Trade Frictions and New Awareness Trade Deficits Trade deficits have ballooned trade deficit shift Trade deficit to Japan trade deficit;unfavourable balance of trade trade deficit/unfavourable trade balance trade deflection trade delegation trade department trade dependence trade dependence rate trade-dependency trade-dependent trade depression