轴颈在轴承面上摩擦.The journal rubs against the bearing surface.夹紧处扭杆的微小滑移会产生干扰力矩,它的作用和轴颈的摩擦力矩一样.Torsional microslip at the clamps results in spurious torques which act like pivot friction torques.在发动机里, 机油被供应到旋转在其支承轴内的曲轴和凸轮轴轴颈上....
PC Dacre knocked on Webb'sdoor and, opening it, stood to one side.警员戴克敲了敲韦布的门，在推开门的同时，闪到了一旁。"Go and have a word with her, Ken," Webb instructed.“肯，去和她谈谈吧，”韦布吩咐道。"I'm sorry to disturb you," Webb said gently.“很抱歉...
A NEW SPECIES OF NEZARA AMYOT ET SERVILLE ( HETEROPTERA. PENTATOMIDAE )绿蝽属(NezaraAmyotet Serville )一新种(半翅目:蝽科 )A NEW SPECIES OF THE GENUS PHYTOCORIS FALLN ( HEMIPTERA, HETEROPTERA, MIRIDAE )植盲蝽属一新种记述 ( 半翅目, 异翅亚目, 盲蝽科 )NO...
All were busily engaged, men at their ploughs , women at their looms.大家都很忙, 男的耕田, 女的织布.The factories no longer relied upon a mechanic to put together looms within the plant.工厂不再依靠机修工在车间里组装织机。The factory has twenty-five l...
He was a drummer in a rock band...他曾是一个摇滚乐团的鼓手。The ground surface subsides discontinuously and rock mass fails slowly in the mine.东区现有地表下沉属于不连续下沉,岩层破坏主要是缓慢型破坏.A young man plunged from a sheer rock face to his death.一名男青年...
A number of staircases ascend from the cobbled streets onto the ramparts.一段石阶从鹅卵石路上一直向上直通城墙。The square was packed, and the cobbled streets flowed with coloured petals.广场上挤满了人，鹅卵石铺就的街道上满是五颜六色的花朵。They walked through the ar...