hardenability requirements 中文意思是什麼
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Standard specification for carbon and alloy steel bars subject to end - quench hardenability requirements
有頂端淬火硬性要求的碳鋼及合金鋼棒材的標準規范 -
Technical requirements for structural steel with specified hardenability bands
保證淬透性結構鋼技術條件 -
Standard specification for steel bars subject to restricted end - quench hardenability requirements
限定頂端淬火要求的鋼棒的標準規范
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