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...
Many are tired of being unpopular because of their wealth and would encourage more even distribution of it.很多人厌倦了因为自己的财富而不受欢迎，从而会鼓励更加均匀地分配财富。She was an iodine-dark Indian woman with brassy peroxided hair and a dead-tired...
Capsicum is usually used for seasoning of foods in people's life, and it has sanitarian effect.辣椒是人们日常生活中常用的调味品, 具有保健功效.The dried aromatic leaf of the laurel or bay ( Laurus nobilis ) used as a seasoning in cooking....
The newly - weds are in their best bib and tucker.新婚夫妇们穿着盛装.The old child may use a bib with short ties.较大的幼儿可用短带的围嘴.Organza Handkerchief 6 Pcs . Wipe sweat . Can be used as bib.纱布手帕6条可擦汗、当围巾用.The child beslobbered his b...