... 直通双座阀 straight line double seat control valve 直通型 straight type 直凸轮，直叶瓣 straight-lobe ...
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A single ear with the lobe-off that is further trimmed across the lobe area by a straight cut to remove all but the funnel like upper portion.
已去掉脂肪耳叶的单耳，再经以直切的方式割除耳根基部的赘肉，而只保留上部漏斗状的部分。
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