The expanding spring brake-piston damping plates and brake calliper fastening screws must be replaced whenever the brake pads are changed.

更换制动片时，应同时更换扩张弹簧、制动活塞减震板和制动卡钳紧固螺钉。

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A relative systemic spring blasting design is put forward, including the blasting parameters choice, the expanding springing engineering and the initiating system.

提出了比较系统的药壶爆破设计方法，包括药壶爆破参数的确定、扩壶施工、起爆网络等。

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This prevents matter from compressing indefinitely to a singularity of infinite density. Instead, matter rebounds like a spring, and starts expanding again.

这保证了事物不会由一定质量被压缩成为一个无限大密度的“奇点”，相反地，事物像弹簧一样反弹，并且开始重新扩张。

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Apart from her job as a teacher and researcher, Dajani devotes a great deal of her time to the We Love Reading program, which she founded just a few years ago, which I wrote about in the Spring, and which is already expanding into countries all over the Middle East.

FORBES: What the Arab Spring Means for Science in the Arab World

By contrast, small businesses in Texas have been sprouting like bluebonnets in the spring to meet the demands of an expanding population.

WSJ: Allysia Finley: The Reverse-Joads of California