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2013-05-23 12:21
求翻译：4.1.1 Materials. All materials used for the check valves shall comply with the drawing specifications and release data. If single parts of the check valve consist of material which is prone to stress cracks, such as polyamide, these shall be protected against contact with zinc ions. Materials used must meet the require是什么意思？ 待解决
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4.1.1 Materials. All materials used for the check valves shall comply with the drawing specifications and release data. If single parts of the check valve consist of material which is prone to stress cracks, such as polyamide, these shall be protected against contact with zinc ions. Materials used must meet the require
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