基本解釋[機(jī)械工程]精制螺帽詞組短語(yǔ)短語(yǔ)half -bright nut 半精致螺母;半精制螺帽semi -bright nut 半光制螺母semi bright nut 半光制螺母half bright nut 半精制螺帽Bright Mild Steel Hexagonal Nut 光亮軟鋼六角螺絲帽bright nut更多詞組專(zhuān)業(yè)釋義機(jī)械工程精制螺帽