The extraction mechanism of palladium in chloride system by di ( 1 - methyl heptyl ) acetamide ( N _ ( 503 )) has been studied.本文研究了N, N二 甲庚基乙酰胺 ( N_ ( s03 ) )从氯化物体系中萃取钯的机理....
Cowpea crossbreeding has the problem that fructify cation is low according to the traditional method.豇豆杂交育种按照传统的方法存在坐果率低的问题.Cation - anion exchange resin can crack and disassemble bond - chromatography , doff the bond - ...
We shall study a very particular kind of sequences, called convergent sequences.我们将研究称为收敛数列的很特别的一类数列.Generating functions are an ideal tool for studying sequences defined by recurrence.母函数是研究用递推关系来确定的函数的最理想工具.Heterochrom...
Watch out for fleas and ticks that may infest your pet.密切注意是否有跳蚤在宠物身上.温热的天气给跳蚤提供了很好的生存环境....pests like aphids which infest cereal crops.像蚜虫这样大肆侵害谷物的害虫Several animals in sea water can infest wood.海水中有好多动物能侵害木材.Vermin infe...
我快活自由，身体健康，积极乐观。I am happy and free, in good health, gay and cheerful.女孩子们拿着桶和铲子在沙滩上快活地玩耍。The girls happily played in the sand with buckets and spades.我正过得开心快活着呢.I'm having a rollicking good time....
So trade between the two nations has been something of a one-way street, with Cuba deriving the benefit.所以在两国的双边贸易中可以说只有古巴从中受惠。Rather than deriving expressions for these surfaces let's justify the above remarks.我们不去...