The constitution and the features of frequency shift sound reinforcement are analyzed. The application to the multimedia classroom in Chongqing Institute of Technology is presented.

分析了移频扩声系统的组成及主要特点，针对多媒体教室的扩声系统容易产生回声和啸叫等不足，提出了一种多媒体教室移频扩声系统的设计方案。

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The Constitution of UNESCO was signed in the Great Hall of the Institute of Civil Engineers in London on 16 November 1945 by 37 countries.

UNESCO: in the UK

Roger Pilon of the Cato Institute notes that a mere three mentions of crime in the Constitution have blossomed into 3, 000 federal criminal statutes and perhaps 300, 000 regulations with criminal sanctions.

FORBES: E Pluribus Mishmash

The Cato Institute prints a handsome Constitution, the size and appearance of a passport, available for four dollars and ninety-five cents.

NEWYORKER: The Commandments