trial transmission

Jointly launched four-month China MAN Trial' 2000. Taking IP technology as the theme, the trial involves metro optical transmission network, backbone routing switching broadband integrated access, IP value added services, broadband multimedia applications, network operation& maintenance, billing and other aspects.

实验以宽带IP技术为主线，涵盖了从城域光传输网络、骨干路由交换、宽带综合接入、IP增值服务、宽带多媒体应用到网络运营维护和计费等方面，共有近20家厂商参加。

In this article the bearing ability test of hard gear face point-line meshing gear transmission and the trial of noise test are introduced.

本文介绍了硬齿面点线啮合齿轮传动的承载能力试验和噪声测定试验的情况。

This paper introduces the general arrangement, main technical parameters, diesel engine, transmission system, car body, braking system and running gear of GCD-470 heavy rail motor car. The type test, trial running, etc., are discussed.

介绍了新型电传动重型轨道车的总体布置、主要技术参数、动力装置、传动系统、车体、制动系统、走行部、型式试验及考核运行等。

NTT's Success in 3Tbit/ Super-large Capacity Optical Transmission System Trial

NTT实验成功3Tbit/s超大容量光纤传输系统