斜齿轮传动
helical gear transmission
helical gearing
斜齿轮的当量直齿轮
equivalent spur gear of the helical gear
斜齿轮和轴总成
winch input clutch， bevel gear， and shaft assembly
winch input clutch
Bevel gear
and shaft assembly
斜齿轮盘形铣刀
helical gear dick-type cutter
斜齿轮切齿机
bevel gear cutting machine