In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.

在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。

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The spring presses through the briquetting the rack depending in the gear, guarantees ceaseless meshing.

弹簧通过压块将齿条压靠在齿轮上，保证无间隙啮合。

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If you want to wear every day, the best maintenance method is to tighten the spring every two weeks, to ensure that the normal smooth running gear.

如果每天都要佩戴，最好的保养方法是每两个星期紧一下发条，保证它的齿轮正常顺滑运转。

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As the spring and summer driving seasons gear up, the debate is bound to get hotter.

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This could be a trend, but it could also be part of a seasonal production cycle where Chinese companies import raw materials and components in the spring, in order to gear up to export finished products later in the year.

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If your golfer plays in foul weather, they need good rain gear, yet it is something few golfers spring for - many try to make due with rain gear that is not designed for sports or swinging, or simply with layers that are not waterproof.

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