signal
n. 信号, 暗号, 近因, 导火线 vt. 向...作信号, 标志, 用信号通知 vi. 发信号 a. 作为信号的, 显著的 [计] 信号
发音
词形变化
别名
教材释义与例句
信号；暗号；导火线
a sound or action that you make in order to give information to someone or tell them to do something
标志；用信号通知；表示
to make something clear by what you say or do – used in news reports
发信号
显著的；作为信号的
释义与例句
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1.
A sequence of states representing an encoded message in a communication channel.
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2.
Any variation of a quantity or change in an entity over time that conveys information upon detection.
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3.
A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
信号
讯号
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4.
An on-off light, semaphore, or other device used to give an indication to another person.
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5.
An on-off light, semaphore, or other device used to give an indication to another person.
A railway signal.
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6.
An electromagnetic action, normally a voltage that is a function of time, that conveys the information of the radio or TV program or of communication with another party.
信号
媒体 工程My mobile phone can't get a signal in the railway station.
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7.
An action, change or process done to convey information and thus reduce uncertainty.
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8.
A token; an indication; a foreshadowing; a sign.
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9.
Useful information, as opposed to noise.
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10.
A simple interprocess communication used to notify a process or thread of an occurrence.
计算机 工程 数学 -
11.
A signalling interaction between cells
化学 生物
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1.
To indicate; to convey or communicate by a signal.
及物/不及物I signalled my acquiescence with a nod.
He whistled to signal that we should stop.
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2.
To communicate with (a person or system) by a signal.
及物Seeing the flames, he ran to the control room and signalled headquarters.
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1.
Standing above others in rank, importance, or achievement.
a signal exploit; a signal success; a signal act of benevolence
词汇关系
近义相关 1
相关短语
词源
From Old French segnal, seignal or Medieval Latin signāle; noun use of the neuter of Late Latin signālis, from Latin signum; verb use from 1805, as a shortened from signalize (1650s). Doublet of signum and sign.
来源：wiktionary