... 阀盘 valve disc 阀动椭圆 valve ellipse 阀面 valve face ...
基于6个网页-相关网页
... 阀动图 valve diagram; Zeuner valve diagram 阀动椭圆图 valve ellipse 锅炉借水 running at dropping water level ...
基于6个网页-相关网页
... 点椭圆 null ellipse 阀椭圆 valve ellipse 光椭圆 light ellipse ...
基于1个网页-相关网页
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