“octagon steel bar”的概念、定义、翻译、参考文献-科学参考

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单词	octagon steel bar
释义	octagon steel bar 八角钢条
随便看	standard operation time standard operator standard opinion standard optical dynamometer standard option standard orifice standard orthogonal basis standard oscillator standard output standard overhead cost standard over head rate standard oxidation potential standard oxidationreduction potential standard oxidation-reduction potential standard oxidizing potential standard package standard packet protocol standard page standard parallel standard parameter standard partial regression coefficient standard parts standard pattern standard pattern dissecting forceps standard payback period of investment