This part is made by welding and correct the defromation after welding. Unspecified weld leg is----. Grind to free of burr.

本件全部焊接，焊后整形。未注明的焊脚高度为，修光去毛刺。

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The effects of componets and contents on surface hardness, impact resistance, defromation start temperature, density an so on were systematically studied.

系统研究了材料的组成对表面硬度、透光率、冲击强度、热变形温度、密度等性能的影响。

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