halbrundniet roundhead rivet/button head rivet半圆: semicircle铆: rivet半圆铆钉: half-round rivet半圆铆端: snap point半圆: semi-circle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:半圆铆,即可在微信中查询翻译