... 耐快速开裂扩展的测定(RCP)全尺寸试验(FST) 公称外径nominal outside diameter 平均外径mean outside diameter ...
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nominal outside diameter of tubing [油气] 油管公称外径
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The reference standard, of convenient length, shall be prepared from a length of bar or tube of the same nominal outside diameter, material and heat-treatment as the material examined.
对比试块应从与待检材料有相同的公称外径、材质和热处理状态的棒或管上制取。
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