常見(jiàn)例句雙語(yǔ)例句The forming condition of crystal and closed pore in tabular alundum produced with electric melting is estimated and determined theoretically.從原理上判斷和估計(jì)了電熔板狀剛玉結(jié)晶體和闊氣孔的形成條件。 返回 tabular crystal