方头凹端紧定螺钉square: n. 1.正方形,四方块,四角;方形物。 2.(方形)广 ...set screw: 固定[定位]螺丝,弹簧调节螺丝。 slotted set screws with cupoint: 开槽凹端紧定螺钉hexagon socket set screws with cupoint: 内六角凹端紧定螺钉square head set screws: 四角头固定螺丝下载手机词典可随时随地查词查翻译