电信专业英英词典D-7
英语课
DSU
data service unit
DTMF
dual 1 tone multiple frequency
DTS
digital termination service
Dual-Tone Multiple Frequency (DTMF)
the generic 2 name for the tone signaling scheme used to signal from telephones to switching equipment, in which 10 decimal digits 3 and two auxiliary 4 characters are represented by selecting two frequencies of the following group: 697, 770, 852, 941,1209,1336,1447 Hz.
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收听单词发音 1
dual
adj.双的；二重的，二元的
参考例句：
The people's Republic of China does not recognize dual nationality for any Chinese national.中华人民共和国不承认中国公民具有双重国籍。
He has dual role as composer and conductor.他兼作曲家及指挥的双重身分。
2
generic
adj.一般的，普通的，共有的
参考例句：
I usually buy generic clothes instead of name brands.我通常买普通的衣服，不买名牌。
The generic woman appears to have an extraordinary faculty for swallowing the individual.一般妇女在婚后似乎有特别突出的抑制个性的能力。
3
digits
n.数字( digit的名词复数 )；手指，足趾
参考例句：
The number 1000 contains four digits. 1000是四位数。 来自《简明英汉词典》
The number 410 contains three digits. 数字 410 中包括三个数目字。 来自《现代英汉综合大词典》
4
auxiliary
adj.辅助的，备用的
参考例句：
I work in an auxiliary unit.我在一家附属单位工作。
The hospital has an auxiliary power system in case of blackout.这家医院装有备用发电系统以防灯火管制。
adj.双的；二重的，二元的
- The people's Republic of China does not recognize dual nationality for any Chinese national.中华人民共和国不承认中国公民具有双重国籍。
- He has dual role as composer and conductor.他兼作曲家及指挥的双重身分。
adj.一般的，普通的，共有的
- I usually buy generic clothes instead of name brands.我通常买普通的衣服，不买名牌。
- The generic woman appears to have an extraordinary faculty for swallowing the individual.一般妇女在婚后似乎有特别突出的抑制个性的能力。
n.数字( digit的名词复数 )；手指，足趾
- The number 1000 contains four digits. 1000是四位数。 来自《简明英汉词典》
- The number 410 contains three digits. 数字 410 中包括三个数目字。 来自《现代英汉综合大词典》