帧中继

The communication systems wildly used nationally and internationally, such as audio frequency wire communication, carrier-current communication, micro-wave communication, optic-fiber communication, expanding frequency communication and satellite relay communication, are investigated in detail. The different communication systems used in Changsha County electric power systems are analysed in detail.

对目前国内外使用较多的一些通信方式如音频线通信、载波通信、微波通信、光纤通信、扩频通信、卫星帧中继通信等进行了较为深入的分析和研究；对目前长沙电力局正在使用的变电站与调度端的通信方式——进行性价比方面的分析比较，综合以上，得出了最为合适的变电站到调度端的通信方式。

Generally speaking, private line and frame relay customers are not ready to or interested in deserting longstanding services, so the migration to Ethernet is going to be slow and steady.

&&一般来说，在专用线路和帧中继用户没有准备好或有兴趣在开小差，长期以来服务，使移民到以太网将会缓慢而稳定。

Companies using advanced Mandarin and Bloomberg analysis system, the province took the lead in the opening of online transactions and, through the frame relay access line three exchanges, high-speed transmission and a high degree of stability to ensure that the transactions accurately and fast, the maximum extent to protect the interests of its clients.

公司使用先进的文华和澎博分析系统，率先在省内开通了网上交易，并通过帧中继专线接入三家交易所，高速的传输和高度的稳定性保证了交易的准确和快捷，最大程度上保护了客户的利益。

D. This command is required for all Frame Relay configurations.E. The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC.

因为在默认的情况下，帧中继的网络为非广播的，而 RIP 在其上是无法发包的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。