If great accuracy is required, the gear must be ground.

如果对齿轮有精度要求，齿轮就必须经过磨削。

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Apart from climatic variables, the trip also involved a mix of work and pleasure, including a short fishing holiday in Guatemala which also required me to pack some specialized gear and gadgets.

除了气候差异较大之外，这次旅行的内容也是公务和休闲参半，其中还包括去危地马拉钓鱼，所以我得带上一些特殊的装备和器具。

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Electric motors in other countries may operate at 1350 RPM so a different reduction gear set will be required.

在其他国家电动机可运行在1350转这样一个不同的减速将需要设置。

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The lighting, camera angles, wall-colour, acoustics and furniture are all designed to make two Halo systems feel like a single room when linked together, and to do away with the 15 minutes of messing around usually required to set up videoconferencing gear.

ECONOMIST: Videoconferencing

Despite the horror stories being pitched suggesting that people in hazmat gear will be required to clean up a busted light bulb, the truth is a broken CFL bulb will be swept up (not vacuumed) just as broken bulbs have always been swept up.

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With the help of a machinist, and using a formula he concocted for a stiff, self-lubricating plastic, Fenelon built a crude prototype of the gear and found that the torque required to push the window was half of what the old design required.

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