本文介绍了炼油厂机泵常用碳化钨动环过盈配合机械密封合理过盈值的计算方法及计算图表。

This article presents a method and monograms for calculating the rational interference values for fitting the tungsten carbide floating rings in mechanical seals.

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采取上述预防措施是完全必要的，因为王常盈的儿子并未忘记杀父之仇，他潜伏在石壁村附近蠢蠢欲动，伺机报复。

These precautions were necessary, for the son of Landlord Wang had not forgotten his father's death and was lurking in the vicinity, looking for revenge.

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