去毛刺应用多大的钻头?
用风钻安装“毛刺划钻”去毛刺,也可用比铆钉孔大2~3级的钻头去毛刺(其顶角为120°~160°)。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧