The causes of the wearable zone dropout were analyzed by the metallography analysis and SEM.采用金相分析和扫描电镜分析方法,分析了钻杆接头喷焊耐磨带脱落原因.The strain of the proeutectoid ferrite in hypoeutectoid steel drawing measured and analyzed by ...
放出钢丝绳时要制动.Check a cable when it's running out.其转向和制动装置都完全符合一辆运动型汽车的标准。The steering and braking are exactly what you want from a sporty car.每个制动蹄面上衬贴着一种物质, 叫制动片衬.Each shoe is faced with a material, known as brake lin...