单词	channel black
释义	channel black 槽法炭黑
随便看	difference coordination mechanism difference-copy difference correction difference correction method difference correlation difference counter difference crank spread difference crank spread, crank web deflection difference cultural difference cumulative difference current difference curve difference curves difference cycle differenced difference data transmit system difference degree difference derived opemter difference detecting difference detection difference detector difference determinant difference diagram differenceDIFF differencedifferential equation