Thus development of improved additives like anti-oxidants and viscosity index improves for engine oil has enabled routine servicing intervals to increase from 3000 to 6000 to 12000 miles.

一些添加剂如抗氧化剂的开发和发动机油粘度指数改进使汽车日产维修期限从3000英里延长到6000英里再到12000英里。

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Recharge system with refrigerant, check and test regulators, calibrate system and perform routine maintenance or servicing.

给系统添加制冷剂，检查和测试的调节器，校准系统，并进行日常维护或维修。

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Performs routine duties in the cleaning and servicing of public areas.

履行清洁及服务公共区的日常职责。

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Although such a condition would normally be detected during routine servicing, the recall has been ordered to minimise customer concern.

BBC: Mini Classic in safety recall

Servicing existing accounts would be easier, at least for routine deposits and withdrawals.

ECONOMIST: Savings