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- optical telegraph system [计] 光电报系统
- Public use of Morse's telegraph system Began in 1844 and lasted more than 100 years. 1844年公众开始使用摩斯的电报系统,并一直持续了一百多年。
- A wire or system of wires connecting telephone or telegraph systems. 电话线连接电话或电报系统的电线或电线系统
- Telegraph systems became unusable across Europe and North America. 欧洲与北美各地的电报系统再次瘫痪。
- Morse Code is a telegraphing system invented in the 1840s, by Samuel F.B.Morse. 莫尔斯电码是一种电码系统发明于19世纪40年代，由塞缪尔全莫尔斯。
- error-correcting telegraph system 纠错电报系统,改错电报系统
- permanent record telegraph system 永久性记录电报制
- American businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University(1868)with Andrew D.White. 康奈尔，以斯拉1807－1874美国商人，慈善家，帮助发展并统一了美国的电报系统，并与安德鲁 D 怀特一起建立了康奈尔大学（1868年）
- Cornell:american businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University (1868) with andrew D. White. 康奈尔:美国商人;慈善家;帮助发展并统一了美国的电报系统;并与安德鲁·D·怀特一起建立了康奈尔大学(1868年).
- Mobile Automatic Telegraph System 机动自动电报系统
- American businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University(1868) with Andrew D. White. 康奈尔，以斯拉1807－1874美国商人，慈善家，帮助发展并统一了美国的电报系统，并与安德鲁·d·怀特一起建立了康奈尔大学（1868年）
- A system of optical components that magnifies. 能起放大作用的一组光学元件
- The optical system of the eye stimulate cell of the retina. 眼睛的视觉系统刺激视网膜内的细胞。
- His optic nerve was hurt in an accident. 他的视神经在一次事故中受到损伤。
- Describes several telegraph systems, in many countries, that predate electrical telegraphs. 文中讲述了在电话之前许多国家的几种电报系统。
- The optical system of the eye stimulates cells of the retina. 眼睛的视觉系统刺激视网膜内的细胞。
- Microscopes and telescopes are optical instruments. 望远镜和显微镜是光学仪器。
- The optic theory originated with Einstein. 光学理论是爱因斯坦首创的。
- single channel radio telegraph system 单路无线电报系统
- time-division multiplex telegraph system 时间分隔多路电报制
