开始信号 meaning in Chinese

commencing signal

Cq call to quarters
公告等的广播开始信号
The participants are not allowed to touch the tobacco until the starting signal is given
在开始信号给出前，参赛者不得接触烟草。
Pre - start manoeuvres : tactical manoeuvres in the water carried out with the intention of being in the best possible position for the starting signal
开始前调整：在水上进行的一系列技术调整，以便开始信号发出后以最好的姿势开始比赛。