Construct an animation showing the tangent sweeping out the interior of astroid.建构一动态绘图:展示星状线的切线所有扫掠过的内部轨迹.Construct rotating cardioid and astroid while remaining orthogonal to each other.作旋转的心脏线和旋转的星状线,且彼此维持正交.Construct...
她并不是个才智非凡的人，但理解力很强。She is not an intellectual, but is quick on the uptake.他是个聪明的孩子, 理解力很强.He is a bright lad , always quick on the up take.他对英语的理解力很好.His understanding of English is good....
Investigates the matching calculation of electromechanical transmission system for electric cars.研究电动轿车机电传动系统匹配计算方法.Microsystem or micro electromechanical system ( MEMS ) is briefly introduced.本文简要介绍微系统的涵义、发展和主要特点.Electr...
She sat in economy class on the flight to Bucharest.她乘坐经济舱飞往布加勒斯特。Where Bucharest now stands, there once was a large, dense forest.布加勒斯特的所在地过去曾是一大片茂密的森林。He worked as a dance instructor in London before setting himself up...