文学 言语交际 释 semaphore 旗语 一种用旗帜作为媒介的传递信号的交际方式。常用于航海、军事或某些特殊用途中，主要是下达简短命令、保障协同和相互识别。
semaphore 信号杆，信号机，信号标，信号量
semaphore 信号量
系统软件 操作系统 释文 semaphore 信号量
- second class of ordinal numbers
- second comparison test
- second complementary law
- second component
- second conjugate space
- second contact
- second control
- second cosine formula
- second cosine theorem
- second cosmic velocity
- second countability axiom
- second countable space
- second countable topological space
- second Cousin problem
- Second creation
- second critical magnetic field
- second cultivated machinery
- second curvature
- second demographic transition
- second derivative
- second derivative test
- second derivative test discriminant
- second development
- second difference
- second differential