In the inner shelf, the main geomorphic types have the accumulational plain, shoreface terrace, an-cient costal line, ancient stream channel, mamelon and pit-and-pots. 内陆架地貌主要有陆架堆积平原、水下阶地、古海岸线、古河道、小丘和坑洼群等;
The principle for designing the entrance channel of Zhuhai Port, the main design parameters concerned, line selection and the main dimensions of channel, the analysis on sandy soil in the harbour district and navigation aids are introduced in the paper. 介绍珠海港进港航道设计原则、有关主要设计参数、航道选线、航道主要尺度、港区泥沙分析、导助航设施等。
The paper introduces a distributed control system for automatically detecting line of automobile, and emphatically presents main execution unit of detecting line and analog signal channel as well as communication adapter. 本文介绍了汽车自动检测线系统,着重分析了分层分布式控制、数据采集系统,并对检测线上重要的执行部件、模拟信号通道以及通信适配器作了讨论。
The article first introduces the concept of Power Line Communication and its development, and then it does some main analysis on the power line channel characteristics and establishes a power line multipath channel model. 文章首先介绍了电力线通信的概念以及相关的发展状况,然后对电力线信道的几种特性作了主要分析,并在此基础上建立了电力线信道模型。
In recent years, with the constant and rapid development of inland navigation in our country, increasing hazardous chemicals is transported along Yangtze River main line, Yangtze River has became the main channel of hazardous chemicals in the Chinese eastern and western parts. 随着我国内河航运的不断快速发展,近年来,越来越多的危化品在长江干线上进行运输,长江已经成为我国东西部危化品运输主要通道。