Clear working status indication, a simple functional operation, safety, energy saving, convenience;
清晰的工作状态指示，简单的功能操作，安全、节能、方便；
The effective design and functional operation of fire safety measures in subway systems are discussed.
另外，还讨论了地铁系统的有效设计和火灾安全设施的正常运作情况。
These units played a key functional role in the military operation.
这些单位在军事行动中起到了主要的职能作用。
These units played a key functional role in the military operation.
这些单位在军事行动中起到了主要的职能作用。
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