self-drilling tapping screw自: self; oneself; one's own钻孔: drill; bore; drill hole perf ...攻丝螺钉: thread-cutting screw自攻丝螺钉: self-tapping screw; self-threading screw; sheet-metal screws; tapping screw攻丝螺钉: thread cutting screw下载手机词典可随时随地查词查翻译
