Underpinning this success has been an exemplary record of innovation.具有典范性的创新确保了这次成功。But underpinning Mr Armstrong's technology changes is a human touch.但阿姆斯特朗技术变革的支柱是人情味.It was rectified by method of preloaded pile...
Furiously he tested the spark - plugs, stared at the commutator.他气呼呼地测试着火花塞, 眼睛盯着转换器.The two ends of the wire are connected to a split - ring commutator.导线的两端联接到裂环整流器.Commutator and brushes shall be free of grease, or ot...
Jacky stood, watching the hobo walk away, still poised to follow.杰基站住了, 看着流浪汉离去, 但是仍做着跟随的准备.Mum stressed that Jacky should be home by ten o'clock.妈妈强调,杰基一定要在十点钟之前回家.I turned to Jacky, my nostrils flaring in disgust....
The earth rotates on its axis once every 24 hours.地球每24小时依其轴心自转一次.The camshaft rotates in phase with the crankshaft, but at half its speed.凸轮轴和曲轴协调旋转, 但速度仅是曲轴的一半.The earth rotates once a day on its axis.地球绕它的自转轴一天旋转一周....