offset flapping hinge外: outside; external side伸: stretch; extend挥舞: wave; wield; brandish铰: cut with scissors挥舞铰: delta hinge; flapping hinge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:外伸挥舞铰，即可在微信中查询翻译
