理学 局域网 释 hub 集线器 在计算机网络中配置成星形的中心功能单元。它协调在站之间的数据通信，并可以提供对其他计算机网络的接入。
网络与数据通信 协议体系与组成结构 释文 hub 集线器
- contragradient mapping
- contragradient matrix
- contragradient module
- contragradient representation
- contragradient set
- contragradient transformation
- contragredient
- contragredient automorphism
- contraharmonic mean
- contraindicated during pregnancy
- contraindicated in diet
- contraindication of Chinese medicinal use
- contraindication of pattern
- contralto
- contranatant
- contraorbital
- contraorbitally
- contra-parallelogram
- contrapedal curve
- contrapolarization
- contraposition
- contrapositive
- contrapositive of the implication
- contrapositive sentence
- contrapositive theorem