1、直拨
... 重拨 redial 直拨 direct dialing 锅炉补给水处理 boiler make-up water treatment ...
2、直接拨号
... DD Digital Display 数字显示 DD Direct Dialing 直接拨号 DD Direct Drive(r) 直接驱动（器） ...
3、直接选择
...直接选台 d.a.p直接选择 direct dial(l)ing; direct dialing; direct keying; direct option; non register ...直接选择器 direct selector ...
DOD Direct Outward Dialing直接向外拨号;外线直拨
DID Direct Inward Dialing直接进入拨号
Direct-dialing Service直拨电话
direct indifference dialing直接长途拨号
direct outward dialing system分机用户直拨外线用户制
direct international dialing国际直拨
direct in dialing直拨
direct distarce dialing长途直拨
direct distance dialing telephone直接长途拨号电话