缩孔和缩松是球墨铸铁特有的废品现象.Shrinkage and dispersed shrinkage are the special waster of ductile iron.分析了缩孔产生的原因,消泡剂的作用机理并介绍了预防缩孔的措施.The reasons of crater and action mechanisms of antifoaming agents were analysized.取消冷冒口后,缩孔、缩松问题成功...
She is a skeptic about the dangers of global warming.她是全球变暖危险的怀疑论者.The slender skeptic skips school in slack seasons, which signifies her slackness.一到淡季那个苗条的怀疑者就逃学, 这表现了她的懒散.I agree with the skeptic at this point : the c...
Water in the engine compartment is sucked away by a hose.发动机舱里的水由一条软管抽走。He uncoiled the hose and gave them a thorough drenching.他把软管铺展开来，把它们彻底冲洗了一下。dressed in doublet and hose穿着紧身衣裤...