镦头锚 button head: 半圆头; 扁圆头; 圆头的button-head: 半圆头的; 圆形端头button head bolt: 圆头螺栓button head cap screw: 圆头帽螺钉button head machine: 镦头机下载手机词典可随时随地查词查翻译
