那是个偏心轮.That is an eccentric wheel.采用偏心轮和弹簧结构, 研制了口腔修复体疲劳寿命测试机.Using eccentric wheel and spring, an instrument was developed in this study.其整个系统主要由偏心轮夹紧机构、液压泵站和单片机控制系统组成.The whole system mainly consists of eccentric cam h...
They supplied large numbers of tractors to peasants.他们向农民供应了大批拖拉机。All the tractors except this are good in quality.除了这台拖拉机,所有其他的拖拉机质量都很好.Tractors, Excavators, Construction Plants, Agricultural Machinery, Golf Course and ...