Global variables to switch triggers off for maintenance.

使用全局变量关闭触发器以进行维护。

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Every machine is equipped with protect travel switch in order to increase safety coefficient for repairing and maintenance. It also has thermal overload relays to protect the motor.

每台机器均配有保护行程开关，为维修、保养增加一份安全系数。且装有热过载继电器，保护电机。

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The working principle of colour TV supply source circuit and fault analysis were described. Some maintenance examples are helpful for repairing other switch supply source circuits.

介绍了彩显电源电路的基本原理及故障的分析和维修实例，对维修其它开关电源电路具有借鉴作用。

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Seiko wrote there was a similar fire in Kabukicho,Japan in two thousand one: "The building had a fire alarm apparatus but the switch was turned off because of poor maintenance.

VOA: special.2011.03.18

Over the coming weeks gasoline prices are expected to drift higher, as they do nearly every late winter and early spring when refiners close for maintenance and switch to more expensive summer blends.

NPR: Oil Prices Down Sharply For A 2nd Day

Highways teams are on standby to switch from routine highways maintenance work to snow clearance duties.

BBC: Gritter