[脱粒筒]固定齿
fixed sprinkling equipment
篦齿盘均压孔
aperture of labyrinth disc
泵体齿轮磨损深度
pump body gear wear depth
泵传动齿轮箱驱动皮带
pump drive gearbox drive belt
泵传动齿轮箱驱动带轮
pump drive gearbox drive sheave
泵传动齿轮箱故障检查排除
pump drive gearbox troubleshooting
泵传动齿轮箱部件
pump drive gearbox component
背对背锯齿波
back to back sawtooth wave