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At first, the tubes contained just a plastic rod.
开始时，这些管子里只含有一个塑料棒。
youdao
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The effect of structure flaw on plastic deformation of hard wire rod is discussed...
探讨了硬线盘条的组织缺陷对其塑料性变形的影响。
youdao
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The effect of structure flaw on plastic deformation of hard wire rod is discussed...
探讨了硬线盘条的组织缺陷对其塑料性变形的影响。
youdao