telephone switching system

短語詞組

短語

• automatic telephone switching system 自動(dòng)電話交換系統(tǒng);自動(dòng)
• manual telephone switching system 人工電話交換機(jī)
• Public Telephone Switching System 交換機(jī)
• mobile telephone switching system 移動(dòng)電話交換機(jī)
• toll telephone switching system 長途電話交換機(jī);長話交換機(jī)
• local telephone switching system 市內(nèi)電話交換機(jī);地區(qū)電話交換機(jī)
• STEP TELEPHONE SWITCHING SYSTEM 步進(jìn)制電話交換機(jī)
• SOHO TELEPHONE SWITCHING SYSTEM 求電話交換機(jī)
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