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...
The N pole and S pole of two magnets will attract each other.两个磁体的N极和S极互相吸引.The magnolias are in blossom and they attract many swallows.玉兰花开吸引了许多燕子.They should attract foreign investment.他们应吸引外资。Frozen plant of company m...
这笔钱将投资于管理基金。The money will be invested in managed funds.他将很多钱投资于新油田的开发.He ploughed much money into developing new oil fields.资金可以保险地投资于那个公司上.Capital can be safely invested in that company....