semaphore background

semaphore

/ˈsɛməfɔː/ /ˈsɛməˌfɔɹ/

Illustration semaphore - Image 1

noun

旗语，信号装置

Any equipment used for visual signalling by means of flags, lights, or mechanically moving arms, which are used to represent letters of the alphabet, or words.

Examples :

"The construction crew used a semaphore with brightly colored flags to guide the crane operator. "

施工队使用一面带有鲜艳旗帜的旗语装置来引导起重机操作员。

communication technology nautical signal machine military device

Illustration semaphore - Image 1

noun

旗语

A visual system for transmitting information using the above equipment; especially, by means of two flags held one in each hand, using an alphabetic and numeric code based on the position of the signaller's arms; flag semaphore.

Examples :

"The sailors used semaphore to send a message from ship to shore because their radio was broken. "

由于无线电坏了，水手们用旗语从船上向岸边发送消息。

communication technology signal nautical military system sign writing

Illustration semaphore - Image 1

noun

信号量，旗语。

A bit, token, fragment of code, or some other mechanism which is used to restrict access to a shared function or device to a single process at a time, or to synchronize and coordinate events in different processes.

Examples :

"The thread increments the semaphore to prevent other threads from entering the critical section at the same time."

线程递增信号量，以防止其他线程同时进入临界区。

computing technology process signal communication device system function

Illustration semaphore - Image 1

verb

打旗语，用旗帜信号示意

To signal using, or as if using, a semaphore, with the implication that it is done nonverbally.

Examples :

"From across the noisy playground, the teacher semaphoreed to the children to line up. "

老师在嘈杂的操场对面，用手势像打旗语一样示意孩子们排队。

communication signal nautical military