常見例句雙語例句Based upon comparison of working principles of traditional expansion bolt and flat head inner expansion bolt the installation process of GRC is discussed.介紹了GRC搆件的特點(diǎn)及操作中易出現(xiàn)的問題，比較了傳統(tǒng)膨脹螺栓和平頭內(nèi)膨脹螺栓的使用原理，探討了GRC的安裝過程，明確了GRC搆件的重點(diǎn)控制要點(diǎn)，確保GRC工程的耐久性。Hexagon bolts and nuts, hexagon socket head cap screws, thread bar, carriage bolts, Nylon lock hex nut, flat washer, fish bolt set, standard fasteners etc.六角螺母，六角螺栓，自攻釘，牙棒等。非標(biāo)件生産與出口。www.77081.chinafastener.biz 返回 flat head bolt