differential via差分过孔differentialadj.差别的；特定的；微分的n.差别；工资差额；差动齿轮；[数]微分differential rectification of chart海图小改正differential thermal analysis meter差示热分析仪differential transformer transducer差动变压器型传感器differential space-frequency code差分空频码differential pursuit-evasion game追-逃微分对策differential atmospheric absorption较差大气吸收differential drive gear thrust screw差速器环齿轮推力螺钉differential magnetic susceptibility微分磁化率(增值磁化率)differential pulse-code modulation差分脉冲编码调制differential drive gear thrust block差速传动齿轮止推承

1. When the driving pulley rotates, the axis of the differential mechanism will move due to the different diameters of the differential pulleys.
   当主动轮转动时，由于大小差动带轮的直径不同，差动机构就不会停留在原处，而会以一定的规律移动。