Increased gradeability reduces travel speeds asphalt surfaces.提升爬坡能力会相对减低行走速度.The gradeability of full - wheel driving vibratory rollers is related its power, and restricted by cohesive factor.全液压振动压路机的爬坡能力与动力有关系, 并受到附着系...
Light fittings with metal parts should always be earthed.有金属部件的照明装置都应该走地线。Heavy Metal music really arose in the late 60s.重金属音乐真正形成于60年代后期。The car was left a mess of twisted metal.车子成了一堆扭曲的金属。...