在 1691年 的《学报》中詹姆士?伯努利推导出跟踪曲线的方程.In the " Acta " of 1691 James Bernoulli derived the equation for the tractrix.伯努利是个瑞士科学家,曾于1752年为轮船的螺旋浆绘制图纸.Bernouili was a Swiss scientist who described a screw for ships in 1752.采用满足伯努利分...
She went to Sheffield University as a lecturer, under the aegis of Boris Ford.在鲍里斯·福特的支持下，她去了谢菲尔德大学讲课。The space programme will continue under the aegis of the armed forces...这项太空计划将以武装部队作后盾继续进行。under the unfailing aegis ...
There are some agencies now specialising in helping older people to find jobs which pay.现在有些机构专门帮助年龄较大的人找有报酬的工作。Teresinha Roberts is a Brazilian - born textile artist specialising in natural dyes.使用天然染料是让人兴奋和沉醉的.Both bec...