作者证实:单叶双曲面和双曲抛物面是直线曲面.The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.结果表明双曲面微透镜有较高的耦合效率.The results show that the hyperbolic microlens a better coupling - performance....
Conclusion: Low - dose aminophlline is effective and safe in treating the bronchiolitis.结论低剂量氨茶碱治疗毛细支气管炎安全有效,副作用小.Objective : To explore the curative effects of budesonide combined with bricanyl nebulising solution in tr...
Sightseers may be a little overwhelmed by the crowds and noise.拥挤的人群和喧闹的噪音可能会让游客有些茫然不知所措。Sightseers arrived from all points of the compass.观光者来自四面八方。Curious sightseers rolled up in their hundreds.数以百计的好奇的观光客都涌到那儿....
Sodium Diacetate ( SDA ) and Sodium Dehydroacetate are two new - model preservatives.双乙酸钠和脱氢乙酸钠为两种新型的防腐防霉剂.The apply field of sodium diacetate is introduced briefly.简要介绍了双乙酸钠的应用领域.Sodium diacetate is synthesized by aceti...