Bluetongue occurs in most species of ruminants , both domestic and wild.蓝舌病发生于大多数家生的和野生的反刍动物.The pathogenesis of bluetongue is inadequately understood.人们对蓝舌病的发病机制还不完全了解.The bluetongue virus replicates in the insect.蓝舌病病毒...
the prototype of the modern bicycle现代自行车的雏形Metal - wheeled chariots are the prototype of the tanks of modern warfare.金属轮战车是现代战争中坦克的原型.He flew the prototype to West Raynham to demonstrate it to a group of senior officers....
The big factories are trying to stay alive by cutting costs.大型工厂正试图通过削减成本以维持生存。He has worked as a labourer in factories and on building sites.他在工厂和建筑工地干过苦工。Many are employed in the prison's wood and metalwork factor...
The two principal combustion products are water vapor and carbon dioxide.两种主要的燃烧产物是水蒸气和二氧化碳。City's principal marksman was Joe Harvey who scored seventeen goals.市队的头号射手是打进17粒进球的乔·哈维。Donald King is the principal of Da...
这种性质通常称为 “ 螺旋性”, 可以用来区分中微子和它的反粒子.This property, often called " helicity,'serves to differentiate the neutrino from its antiparticle.API螺纹啮合后存在的螺旋性间隙是导致螺纹接头泄漏的根本原因.It is the helical clearance area in API connections ...