用黏土模具来浇铸青铜塑像。A clay mould is used for casting bronze statues.最近他们学会了浇铸轻型水泥船.Recently they had learned to cast light concrete boats.采用钢的连续浇铸法很重要.Of great importance is the introduction of continuous steel pouring....
灰分的碱度可能与纤维的细度有关.There is a possibility that alkalinity of ash is related to fiber fineness.在足够的温度和碱度的情况下, 脂护酯可能被水解产生皂类.At sufficiently high temperatures and alkalinity, fatty esters may be hydrolyzed to produce soaps.讨论了...
My mother sewed a new cotton - padded jacket for me.妈妈给我缝制一件新棉袄.I can tell you I always padded my bras.我可以告诉你我的内衣一直装衬垫的。Such a thin padded coat cannot ward off the cold mountain wind.这么薄的棉衣在高山上挡不住寒风.The only way out was ...