1) selective call with dual voice frequency
双音频选叫
2) dual tone multifrequency(DTMF)
双音双频
3) harmonic signalling
音频呼叫(通报)
4) DTMF
双音多频
1.
Decoding of DTMF signal with software;
双音多频信号的软件解码
2.
The Novel Design of CPLD Application in DTMF Tone PCM Code;
基于CPLD的双音多频信号PCM编码的设计
3.
Control for coder/encoder of DTMF with single chip microcomputer;
利用单片机实现对双音多频编/解码器的控制
5) dual tone multi frequency
双音多频
1.
Based on the microcontroller and Dual Tone Multi Frequency(DTMF) technique,TRCS has functions of the ringing detecting,the telephone lifting simulating,the DTMF demodulation and the on-off control.
该系统基于单片机和双音多频信号技术(DTMF),具有振铃检测、模拟摘机、DTMF信号解调、开关量控制等功能,并且使用ISD4004芯片进行语音提示。
补充资料：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
CAS：38051-10-4
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条