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...
Beacham and McNamara, my two mentors, had both warned me.我的两位忠实朋友,比彻姆和麦克纳马拉都曾经警告过我.These are the kinds of contacts that could evolve into mentors.这些人是可能会成为你导师.His ( Arafat ) traditional mentors were now set to divest the...
Andrew roared with delight when he heard Rachel's nickname for the baby...安德鲁听到雷切尔给婴儿起的绰号时，不禁高兴得大笑起来。She was crowing with delight...她欢呼雀跃。Her face was radiant with delight at the good news.听了这个好消息, 她的脸上乐开了花。His musi...