信号标(Semaphore)，有时被称为信号灯，是在多线程环境下使用的一种设施, 它负责协调各个线程, 以保证它们能够正确、合理的使用公共资源。
信号标准化 [通信] signal standardization ; signal normalization
信号标记 Signal label ; semaphore flag ; sign ; Signal Lable
白信号标准电平 reference white level
信号标准 Signal standard
交换信号标准协会 exchange carriers standards association
宽屏幕信号标准 Wide Screen Signal ; WSSWideScreenSignaling ; WSS
期望信号标识 ExSL Expected Signal label
信号标志 signal mark
数字信号标准 DSS ; digital signature standard ; digital signal standards
返回所内时抢修车及托式信号标车必需开启信号灯。
Return in repair and support type of signal lights must be turned on to the car.
第四步： 公路抢修车及托式信号标车上路时必需开启信号灯。
The fourth step: road repair and support type vehicles on the road must be turned on when signal lights.
第三步： 产教育工作，检查维修作业人员的着装是否符合要求、公路抢修车及托式信号标车是否正常。
The third step: education, whether the maintenance personnel check dress requirements, highway repair and support type signal standard car is normal.
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