Allen screw
noun
(trademark)a screw with a hexagonal socket in the head
(商标)艾伦内六角螺栓
语源1930s: from the name of the manufacturer (see Allen key)
语源1930s: from the name of the manufacturer (see Allen key)noun(trademark)a screw with a hexagonal socket in the head
(商标)艾伦内六角螺栓
语源1930s: from the name of the manufacturer (see Allen key)接受 或继续使用网站，即表示您同意使用 Cookies 和您的相关数据。