水利工程专业词汇英语翻译 ... 方形孔口 Orifice， box 圆形孔口 Orifice， circular 隔膜孔口 Orifice， diaphragm ...
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At the bottom of this plate, an aperture had been pierced exactly similar to the orifice of a letter box.
在那铁皮的下方，开了一个口，和信箱的口完全同一样。
The orifice plate box technique of gas regulating units in cokemakingoven has been put in practical use in many coking and chemical plants.
炼焦炉煤气调节装置孔板盒技术已在许多焦化厂投入使用。
Need to check the oil box's bottom which outlet whether closed or not, after closed surely then open the top of oil box and add the sealing cover for the top orifice.
检查油箱底部放油口是否已关闭，确定关闭后再打开油箱顶部加油口密封盖。
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