Transmission : normally meshed helical gear drive, coupling sleeve shift and two lever operation. The transmission has five forward speeds and four backward speeds .

变速箱采用常啮斜齿轮传动，结合套换档、双杆机械操纵，前进五档、后退四档。

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The adjustor consists of gears and worm-gear reducer, and the automatic controller circuit consists of pulse period discriminator, forward switch, backward switch and protector circuit.

调节器由齿轮和蜗轮蜗杆减速器组成；自动控制电路由脉冲周期鉴别、正向开关、反向开关及保护电路组成。

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The handle (or gear box) of butterfly valve can be rotated backward or forward for 180 degrees.

蝶阀的把手（或齿轮 箱）是可以反转或正转180度操作。

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Options for the new machines will include Apple's new wireless-networking technology, Airport Extreme, which supports speeds of 54 megabits per second and is also backward-compatible with standard Wi-Fi gear.

FORBES: Magazine Article