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关注:1
2013-05-23 12:21
求翻译:Handholes complete with covers shall be provided at bottom section of the valve body and on the bonnet for inspection, cleaning and flushing purposed.是什么意思?![]() ![]() Handholes complete with covers shall be provided at bottom section of the valve body and on the bonnet for inspection, cleaning and flushing purposed.
问题补充: |
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