retract vector退: retreat; draw back; move bac ...刀: knife; sword矢量: vector; complexor进刀矢量: engage vector退刀: retract; tool backlash movement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:退刀矢量，即可在微信中查询翻译
