... 圆括号：parenthesis 圆角孔板：rounded orifice 圆环折流板：disc and donut ...
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Orifice rounded 圆缘孔口
·2,447,543篇论文数据，部分数据来源于NoteExpress
It has rounded shoulders inside instead of the sharp orifice - like edge.
在内部作成圆形凸肩以代替锐缘孔板状的侧面。
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It has rounded shoulders inside instead of the sharp orifice-like edge.
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