避震器前后活塞杆
Piston Rod of Front and Rear
编译器前端生成器
compiler front-end generator
薄膜过滤器前置处理装置
pretreatment equipment with membrane filter
调速器前部壳体总成
governor front housing assembly
供油提前器
Injection timing advance device
机器前履带驱动总成
machine front track drive assembly
前前后后算法
forward-backward algorithm