This paper introduces the composition of double-heat sources system, the regulation of united operation of double-heat sources, hydraulic work condition and operating regulation methods of pipeline.

介绍了双热源系统的组成、双热源联合运行时的规律以及管网的水力工况和运行调节方法。

youdao

2003 - The United States Department of Homeland Security officially begins operation.

2003年的今天，美国国土安全局正式运作。

youdao

The operation, which has been led by France, Britain and the United States, has failed to end the fighting despite three weeks of airstrikes.

尽管进行了三个星期的空袭，可是由法国、英国和美国领导的行动没能结束战乱。

youdao

"I call on the United Nations, an operation to restore the rule of law and the freedom Hondurans deserve,".

VOA: standard.2009.09.29

They say the United Nations complex humanitarian operation in this conflict-ridden province cannot function efficiently without their help.

VOA: standard.2009.03.28

military officer has called an "economy of force" operation, in which the United States did what it could, after doing everything that was needed in Iraq.

VOA: standard.2009.03.27

The United States commends the United Nations Operation in Cote d'Ivoire and French forces for the actions that they have taken to protect civilians.

WHITEHOUSE: Statement by the President on Cote d'Ivoire

And there is already on the ground, as you cite, a United Nations operation in the country, and it has been actively taking steps to protect civilians and to prevent looting at this volatile time.

WHITEHOUSE: Press Briefing

On 22 December 2006, United Nations Secretary-General Kofi Annan appointed his Deputy Special Representative for Burundi, Youssef Mahmoud of Tunisia, as his Executive Representative for Burundi and Head of the United Nations Integrated Office in Burundi (BINUB), which was established on 1 January 2007, following the conclusion of the mandate of the United Nations Operation in Burundi (ONUB) on 31 December 2006.

UN: Secretary-General