?front actuates the automatic transmission also to be loaded with the main gear box and the differential device in the automatic transmission shell.

• ??无级变速器可以从一种扭矩(或转速)平稳地转变为另一种扭矩(或转速)，在变化过程中不是一级一级(或一挡一挡)地跃变，而是稳定、缓和地渐变。