他患有哮喘病，经不起高温和潮湿。As an asthmatic, he cannot cope with the heat and humidity.对猫类过敏是哮喘病发作最常见的诱因之一。Allergy to cats is one of the commonest causes of asthma.患有这种过敏症的人也经常会患有哮喘病。Frequently sufferers of this kind of allergy are ...
The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.The mathematical model of the hyperboloid twist drill was introduced.介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.The...
The acid ewolises nearly as well as the ester.此酸的烯醇化几乎象酯一样良好.Diphenyl carbonate shows a typical vinyl ester effect.碳酸二苯酯表现典型的乙烯的酯类的效应.Ester is one of the most important compounds in Organic Chemistry.酯是有机化学中最主要的化合物之一....
The crews of the Card and its consorts had eaten Christmas dinner in Casablanca before sailing.在起航前“卡德”号和僚舰上的官兵已在卡萨布兰卡吃了圣诞晚餐.She consorts with all kinds of strange people.她与各种怪人厮混在一起....