他的发明和革新包括蓄电池、水泥搅拌机、录音电话、双工式和多工式电报系统、铁路用制动器等。
His inventions and innovations included batteries, cement mixer, the sound recording telephone, double- and multi-type cable system, railways used brakes.
当然针对电话功能来说，一个双工的音频就够了，US 15 W提供4个音频流。
While phone functions need only full duplex sound, US15W supports up to four audio streams.
不幸的是，由于受实际电话信道特性的影响，该技术至今尚未完全解决这一全双工难题。
Unfortunately, limited by the characteristic of real telephone channels, it has not completely solved the full-duplex difficulty problem up to now.
几乎所有的电话保密系统都使用回波抵消技术来实现全双工通信。
The echo cancellation technique is now widely used to implement the full-duplex communication in almost all telephone privacy systems.
晚年，他的发明和革新包括蓄电池、水泥搅拌机、录音电话、双工式和多工式电报系统、铁路用制动器等。
Old age, his inventions and innovations including batteries, cement mixer, sound recording telephone, double - and multi-type cable system, railways used brakes.
文章以无绳电话双工器为例，介绍了在无线通信产品中广泛使用的关键元件——双工器的作用、结构和检测方法。
This paper gives the particular description of theoretical analysis and practical design for duplexer in the mobile communication system.
文章以无绳电话双工器为例，介绍了在无线通信产品中广泛使用的关键元件——双工器的作用、结构和检测方法。
This paper gives the particular description of theoretical analysis and practical design for duplexer in the mobile communication system.
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