The replacement period of the brake fluid is 40000 km, which needs to be replaced regularly.

制动液的更换周期为40000公里，需要定期更换。

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The calculations of replacement period and renewal time are introduced especially and their relationship is analyzed by formula(6)and figure1.

重点给出了更替周期及更新时间的计算方法，并分析了两者的关系。

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The determination of the preventive maintenance period and replacement period makes it possible to maximize the equipment efficiency with minimum maintenance expences during its usage life.

设备预防维修期与更新期的确定，能使设备在使用期中，投入最佳的维修费用，发挥它的最大效用。

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Shels, with their numerical advantage, peppered the Derry goal in the second period of extra-time with replacement keeper Jennings saving from Ollie Cahill and Jason Byrne also going close for the Dubliners.

BBC: Greg O'Halloran tries to turn Derry's Killian Brennan

The widespread replacement of fee-for-service medicine with managed care led to a period of much lower health care cost growth.

WHITEHOUSE: CEA -- Chair's Remarks -- 06082009