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词汇
PSTN
释义
PSTN
公用电话网（=Public Switched Telephone Network）
是以传统铜线作为传递媒介的电信局，且是一种传统过时的电话网路，设备复杂而且维修不易，频宽窄，且时常会有许多杂音及停顿，自然就不能如光纤网路那般提供许多附加服务。
随便看
on-condition
on condition that
on credit
on credit
on deck
on deck and/or under deck
on deck bill of lading
on deck cargo
on deck cargo clause
on deck cargo rate
on deck clause
on deck stowage
on demand
on demand
on-demand system
on display
ondometer
on duty
ONE
one
one-address
one-address code
one-address instruction
one-ahead addressing
one and all
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更新时间：2025/10/14 22:15:11