这句翻译不知道怎么处理，请大家指教！pitting of valve？ http:///thread/41645#newcomments 国外的朋友有答复了： it might mean open them fully . it might mean close them fully . so it depends upon context. some questions to help evaluate the way forward: has a formal hazop study been undertaken on this plant? is debris in the process stream an issue? could up-stream filtration or straining reduce or eliminate the size and levels of debris passing through control valves? is the pipe material-of-construction appropriate for the fluids being conveyed or has corrosion become significant? are pipe velocities so high that erosion, as opposed to corrosion, is the underlying problem? are the valve trim materials correct for the fluids being conveyed?查看更多
如何将HIMA 3.5版的工程转换成4.1版？ g181570378 你好，谢谢你，又出现一个问题，我转完了，出现以下错误，是怎么回事？如何处理？ 2010-7-4, 19:56:59 error lpa017: access denied: object has been saved with an old version of elop ii/demo. use the conversion tool lcconvver to update the object.查看更多
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