水彩画似乎仍比油画略逊一筹。Watercolour still seems somehow to be the poor relation of oil painting.展览陈列了50幅油画和水彩画。The exhibition comprises 50 oils and watercolours.你喜欢油画还是喜欢水彩画?Do you like oil painting or water colour?...
目的: 本文研究鹅去氧胆酸 ( CDCA ) 对呼吸系统的影响.Objective: In this paper, antitussive , antiasthmatic and expectorant action of chenodeoxycholine acid ( CDCA ) were studied.目的研究猪去氧胆酸中的杂质成分和纯化方法.OBJECTIVE To investigate the impurities of...