This paper introduces the component and principle of Digital Program Control Exchange Experimental System, as well as the realization of the hardware and software.

介绍一种数字程控交换实验系统的组成和原理，以及系统硬件和软件的实现。

youdao

Making use of microcomputer techniques, the interface collects information from common control exchange HJ-921 and repeats called subscriber number to rural telephone exchange.

该接口利用微型计算机技术从HJ—921型交换机的公共控制设备采集，并向农村支局自动交换机转发被叫用户号码。

youdao

In a world of mobile capital, an economy cannot both manage its exchange rate and control domestic liquidity.

在这个资本自由流动的世界，一国无法同时掌控汇率和国内流动资金。

youdao

This bargain was done on terms that Germany has always advocated: more central control in exchange for more solidarity.

ECONOMIST: Charlemagne

Unfortunately, when you are part of a team you surrender that control in exchange for the resources and support of the team.

FORBES: Should You Merge Your Firm Or Stay Solo?

PSE's surveillance department, found himself at the centre of a vicious struggle between the broker-members that control the exchange and its few non-broker managers.

ECONOMIST: A financial scandal has shaken the Philippines to its core