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...
建议对 节水 技术和低碳能技术增加更多的投资.It recommends greater investment in - saving technologies and low carbon energy.摘要面向装配的设计是并行工程中的一项重要的使能技术.Design for Assembly ( DFA ) is an important enabler in concurrent engineering.数控技术是发展新兴 高新技...
对于自己那台车性能的稳定性他根本不担心。He's not at all worried about his car's reliability.同时，政治稳定性将放在首位。Political stability, meanwhile, will be a prime concern.工作稳定性已成为很多员工衡量一份工作好坏的标准。Job security has become the touchstone of a ...
该研究所表示,引起这种综合症的是一种尚未确认的病毒.The Institute says that an unidentified virus is to blame for the syndrome.我会给你回电话确认的.I'll call you back to confirm.怀特先生,我会尽快给您确认的.I'll confirm your appointment as soon as possible, Mr...