The valence atom of an alkali - metal atom has two states.碱金属原子的价原子具有两种能态.Such detergents do not yellow the wool as alkali tends to do.这种洗涤剂不会象碱那样使羊毛发黄.All the alkali metals have a single s - electron outside a closed sh...
Both women were unwelcoming, making little attempt to put Kathryn at her ease.两个女人态度都不友好，没有怎么去安抚凯瑟琳。My room was cold and unwelcoming.我的房间又冷又不舒服。His manner was cold and unwelcoming.他态度冷漠、很不友善。His manner was cold and unwel...
Lithium has some chemical behavior that resembles the chemistry of Mg.锂的某些化学行为类似于Mg的.She so resembles her mother.她很像她母亲。Type C closely resembles nonfunctioning pituitary adenomas with bitemporal hemianopsia and hypopitui...