Steps taken now to maximise your health will pay dividends later on.现在采取措施增强体质会使你日后受益。This success is paying economic dividends as oil prices skyrocket.当这石油价格飞速上涨的时候,这个成功取得了巨大的经济利益.Their decision five years ago to comput...
他不定期地来探访我们.He visits us at irregular intervals.他在不定期航空公司受过训练.He got his training with the non - skeds.村民委员会将村务定期或不定期地向村民公开.Villagers'committees regularly or periodically make public the affairs of the village to the...
目的: 合成新的双-胡椒醛缩二胺类席夫碱化合物.Methods: Five Schiff bases were prepared from piperonal and diamines by condensation reaction.用胡椒醛为起始原料,经氯化 、 水解、缩合,制得血凝酸胺.After the process of chlorination, hydrolytic decomposition and condensat...