“direct inward dialing”的概念、定义、翻译、参考文献-科学参考

单词	direct inward dialing
释义	direct inward dialing [dǝ`rekt ¦in·wǝrd `dīl·iŋ] ^{COMMUNICATIONS} The capability for dialing individual telephone extensions in a large organization directly from outside, without going through a central switchboard.
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