variable drive meaning in English

无级变速器

Impact on the mechanisms is greatly reduced because of stepless variable drive
由于是无级变速，大大减轻了对机构的冲击。
This difficult task of adjusting oil pressure , and adjusting to variable driving conditions is handled completely by the ecu , and allows the transmission to extract the maximum performance out of an engine - making this a revolutionary automotive transmission
调整油压的艰难任务和调整多变驱动条件完全由电子控制单元（ ecu ）控制，并允许变速器工作到超过发动机的最高性能? ?使得这是一个具有革命意义的自动变速器。