Bilayer gears, crown gears, bevel gear, wheel, Helical, Worm, safety clutch teeth, small modulus gear and steering gear copper server.

双层齿轮、皇冠齿轮、伞齿轮、滚轮、斜齿、蜗杆、安全离合齿、小模数铜齿及舵机伺服器等。

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To clutch its prey, this dragonfish uses sharp rows of teeth that cover even parts of its tongue.

这种龙鱼通常用一排排甚至覆盖了部分舌头的锋利的牙齿来捕获它们的猎物。

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