单词	sign optional
释义	sign optional [数] 任意符号
随便看	level lines level(l)ing levelling level(l)ing accuracy levelling acid dye levelling action levelling adjustment levelling agent levelling agent 821 levelling agent BOF levelling arm levelling at levelling auger levelling bar levelling base levelling beam levelling beam amplitude levelling beam dimension levelling bench levelling blade level(l)ing blanket levelling blanket levelling block level(l)ing block levelling board 钻故纸堆钻洞觅缝钻火得冰钻牛角尖钻皮出羽钻穴逾垣钻穴逾墙钻穴逾隙钻隙逾墙钼がいあくがいあく【害悪】がいあつがいあつ【外圧】がいいがいい【害意】がいいんがいいん【外因】がいえんがいえん