n.阀( valve的名词复数 )，真空管，（管乐器的）活栓，（心脏的）瓣膜...

The fauna in the Joli Fou consists of bivalves and arenaceous forams.乔里富组内的化石主要是双壳类和砂壳有孔虫.Among 52 species of mollusca identified , 45 were gastropods, 7 were bivalves.调查期间采到的软体动物已鉴定52种,其中腹足类45种, 双壳类7种....

Well we need to put by £200 for the pump valves to be renewed.我们需要存下200英镑以备更换水泵阀。The heart has valves to let blood flow in and out of it.心脏有瓣膜控制血液流进流出.The engineering gang fell earnestly to work on jammed valves.轮机组都起劲地埋...

bivalves的音标：bivalves的英式发音音标为：['baɪvælvz]bivalves的美式发音音标为：['baɪvælvz]...

Some high - performance engines have two separate camshafts, one for each set of inlet and exhaust valves.一些高性能发动机有两个单独的凸轮轴, 分别负责开关进气门和排气门.The latter may be used with bypass or throttling valves in the tower water pipewo...

valves的音标：...

蚌类...