输出脉动 meaning in English

output ripple
ripple in output

At present , mechanical impulse stepless speed regulators are applied extensively . because the structures of those regulators existing at present have a lot of advantages and disadvantages , it affects their application in the cases that small impulse output and stability are required
机械式脉动无级变速器是目前应用较广泛的一种无级变速器，现有的各种形式的脉动无级变速器有一系列的优点，但也存在一些不足，影响了该无级变速器在一些要求输出脉动值小、传动连续平稳的工作场合的应用。