types of steel permissible for
temperforure free movement under 在温度下活动不受束缚 types of steel permissible for 容许的钢材类型 vessels subjected to externwis pressure 担当外压的容器 ..
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permissible for types of steels
... 可容许的检定 admissible test 容许的钢材类型 types of steel permissible for ; permissible for types of steels 容许的火险 acceptablefirerisk ...
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