half-rough nuthalf-rought nut半: half粗制: roughcast; roughhew; rough o ...螺母: nut source; origin; parent粗制螺母: black nut; rough nut粗制螺帽: black nut; rough nut下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:半粗制螺母,即可在微信中查询翻译