... round type zinc-manganese dioxide dry cell 圆形锌-锰干电池 round valve 圆阀 round wash tub 圆洗衣盆 ...
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6In Round Valve Box 中圆阀箱
long half-round slide valve 长半圆滑阀
round d valve 圆阀
round floating valve 圆形浮阀
round butterfly valve 圆形蝶阀
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The structural features and experimental studies of 3d round valve tray are presented.
介绍了3 D圆阀塔板的结构特点和实验研究情况。
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