This is the mechanical type of communication, which includes the use of signal flags, the 21-gun salute, horns, and sirens.

这是一种机械式的传播，包含信号旗、21响礼炮、号角、汽笛。

youdao

They jump the gun and start adding stimulus control while they are still using signals to help the dog Then when they drop the signal they confuse the dog.

他们行动过早，在一起使用信号帮助狗的时候开始加入刺激控制，一旦去掉信号就把狗弄糊涂了。

youdao

The laser target shooting system consists of semiconductor laser gun, photoelectric detector, and signal processing circuit, which is the key part of the whole system.

激光打靶系统主要包括半导体激光枪、光电探测器和信号处理电路，信号处理过程是整个系统的关键。

youdao

"It is a so-called 'smoking gun' signal of dark matter annihilation, " Prof Bergstrom told the BBC.

BBC: Fermi telescope may change to dark matter hunting

Was the leak that the Biden task force is debating big gun restrictions a signal of a fight to come?

WSJ: Strassel: The Real Gun-Control Consensus

Noon: That explosion you just heard is the Noon Day Gun being fired atop Signal Hill.

BBC: Spending 24 hours in Cape Town