signal
美[ˈsɪɡnəl] vt.向…发信号；用动作（手势）示意；以信号告知
vi.发信号
adj.显著的，优越的；暗号的，作信号用的
网络信号；信号的；讯号；信号符号
1 . The coded signal is received by satellite dish aerials.
编码信号由碟形卫星天线接收。
来自柯林斯例句
2 . As soon as it was dark, Mrs Evans gave the signal .
天一黑，埃文斯夫人就发出了信号。
来自柯林斯例句
3 . The transmitters will send a signal automatically to a local base station.
发射台会自动将信号发射到地方基站。
来自柯林斯例句
4 . A thin cable carries the signal to a computer.
一根细电缆将信号传送给一台计算机。
来自柯林斯例句
5 . Kurdish leaders saw the visit as an important signal of support.
库尔德领导人将这次访问视作一种表示支持的重要信号。
来自柯林斯例句
1.any communication that encodes a message;
signals from the boat suddenly stopped
2.any incitement to action;
he awaited the signal to start
3.an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
4.notably out of the ordinary;
the year saw one signal triumph for the Labour party
1.communicate silently and non-verbally by signals or signs;
He signed his disapproval with a dismissive hand gesture
2.be a signal for or a symptom of;
These symptoms indicate a serious illness
函数名： signal 表头文件 #include<signal.h> 功 能： 设置某一信号的对应动作 函数原型 ：void (*signal(int signum,void(* handler)(int)))(int); 或者：typedef void(*sig_t) ( int ); sig_t signal(int signum,sig_t handler); 参数说明： 第一个参数signum指明了所要处理的信号类型，它可以取除了SIGKILL和SIGSTOP外的任何一种信号。 第二个参数handler描述了与信号关联的动作，它可以取以下三种值： （1）一个无返回