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
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.
15日，第106届中国进出口商品交易会(广交会)在广州开幕。 作为中国外贸的风向标，本届广交会有望释放积极信号。
Healthier signs are expected for China's foreign trade judging by China's 106th Export and Import Trade Fair (Canton Fair), which kicked off Thursday in Guangzhou.
标普向意大利发出的信号很明确：增长速度是关乎经济生死存亡的关键。
S&P has sent a clear message to Italy that growth is key to its economic survival.
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