single geared drive

什么是round... ... single generation strain: 单代品系 single geared drive 单齿轮传动; 单级齿轮传动 single goal 单一目的 ...

直角三角形... ... "单规制"," single gage system" "单级齿轮驱动"," single geared drive" "单槽熔接"," single groove weld" ...