| 单词 | pmbx |
| 释义 | > as lemmasPMBX PMBX n. Telephony private manual branch exchange. ΚΠ 1932 T. E. Herbert & W. S. Procter Telephony (ed. 2) I. xiv. 614 Lines terminating on a P.M.B.X. are connected to consecutive jacks. 1975 Post Office Electr. Engineers' Jrnl. 68 61/2 The PMBX No. 4 was originally designed to meet the requirements of single-position installations of up to 160 extensions. 1986 G. Langley Telecommunications Primer (ed. 2) xvi. 44 Boards like this were called PMBXs, Private Manual Branch Exchanges. < as lemmas |
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