题目内容

绘制断面图时,当剖切平面通过回转面形成的孔、凹坑的轴线时,该结构按 绘制。

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螺距P、线数n和导程L三者的关系式为 。

请描述螺纹代号M24×1.5LH—5g6g­—S的含义 。

There were so many new immigrants that they might even change the basic values of the nation in ____(desirable) ways.

The process by which these many groups have been made a part of a common cultural life with commonly shared values is called ____(assimilate).

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