back-feed material回填材料
back-feed d反馈
back-feed oil seal回流油封
tilt-back feed hopper后翻式加料斗
self-feed back内反馈;自反馈
feed back-clamp circuit反馈箝位电路
parallel-feed back integrator并联反馈积分器
feed back-type proportioning反馈型比例控制器
current feed back op-amp电流反馈运算放大器