Operation and maintenance teams for routine inspection and repair can access the tunnels.
操作和维修人员在进行日常视察和修理时，可以进入隧道中。
Carry out inspection, repair and test of air compressor.
空压级机的检查、维修和测试。
Maintenance and operation of that maintenance, in service of machinery, equipment maintenance, inspection, repair operation.
维修性操作即维修，对在役机械、设备进行维修、检查、修理的操作。
Carry out failure inspection, repair and test of brake system and relevant components.
制动系统及相关部件的检查、修和测试。
Carry out failure inspection, repair and test of brake system and relevant components.
制动系统及相关部件的检查、修和测试。
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