Metal salts and Carboxy, keto, aldehyde, acetoacetoxy, complexes phosphonic acid, imine, amino and thio.金属盐类和羧基, 酮, 醛, 乙酰乙酸, 配合膦酸, 亚胺, 氨基酸和硫代.This paper synthesized a kind of macromolecule yl schiff base salts.合成了一种大分子视黄...
那位候选人在南方出人意料地大为得手.The candidate made surprising inroads in the South.他曾在南方务农多年.He farmed in the south for many years.农业区大部分集中在南方.The farming area is centered largely in the south....
Crystals having this property are said to be doubly refracting , or birefringent.具有这种性质的晶体叫做双折射晶体.In pregnancy a high fibre diet is doubly important...在孕期,含高纤维素的饮食越发地重要。She now felt doubly guilty; she had embarrassed Fra...
Objective : To observe the clinical effect of Kangxunwan on acute urticaria in pilots.目的: 观察抗荨丸治疗飞行员急慢性荨麻疹的临床疗效.The pilots had to take emergency action to avoid a disaster...飞行员不得不采取紧急措施避免灾难的发生。He had always been irrelig...
在这和中心之间是一种铜银合金.Between this and the core is an alloy of copper and silver.铜基合金电触头是银合金触头的换代产品.Copper - based alloy electrical contact is silver alloy contact replacement.简要分析了银合金变色的原因.The reasons why the silver alloys tar...