内六角圆柱头螺钉 (內六角圓柱頭螺釘) nèi liùjiǎo yuánzhù tóu luó dīng

nèi liùjiǎo yuánzhù tóu luó dīng set phrase hexagon socket head cap screw
Domain: Modern Chinese 现代汉语 , Subdomain: Mechanical
Notes: (CC-CEDICT '內六角圓柱頭螺釘')