octagon hammer [經(jīng)濟(jì)學(xué)]八角鎚[交通運(yùn)輸工程]八角鎚octagon bar steel [交通運(yùn)輸工程]八角條鋼octagon bar [能源科學(xué)技術(shù)]八角鋼材八角棒材[冶金工程技術(shù)]八角型鋼octagon (n.) octagon n.八邊形，八角形octafluorocyclobutane 過氟化環(huán)丁烷octafluoro n.八氟octadic n.八進(jìn)位adj.八進(jìn)位的octadecylamine n.十八胺octadeca n.十八octad symmetry [化學(xué)]八對(duì)稱octad (n.) octad n.八個(gè)一組；八價(jià)元素octachord n.八弦琴；八度音堦octachlorocyclotetraphosphazene 八氯環(huán)四膦腈octa- octa 八； 辛ocrilate 奧尅立酯ocreate adj.有葉鞘的ocreae [植]托葉鞘