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锡基合金轴瓦浇注缺陷主要有:合金与底瓦粘合不好,这一缺陷会造成传热困难,(),易造成合金层过热、剥离;夹碴夹杂。...
Wednesday, September 20, 2023
Sunday, September 11, 2022
Friday, September 16, 2022
测量工件外尺寸时,游标卡尺测量面的连线应()于被测量表面。...
Friday, September 16, 2022
在安放百分表、千分表和杠杆表等量具时,应使其测头运动方向()于被...
Friday, September 16, 2022
Monday, September 12, 2022
一对齿轮传动中,小齿轮的齿面硬度应()大齿轮齿面硬度....
Sunday, September 11, 2022
Friday, September 16, 2022
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Friday, September 16, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
薄壁的套类零件如用三爪卡盘装夹磨削内孔时,应注意(),以防变形而...
Saturday, September 17, 2022
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在尺寸链中,当其他尺寸确定后,新增加的1个环,是()。...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022