Demonstrates composition and function of a constant pressure water-supply system controlled by PLC and frequency converter as well as the design of each function module.

阐述了基于PLC和变频器控制的恒压供水系统的组成、功能及各功能模块的设计方法。

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What are the composition and function of the individual credit institution?

个人信用制度的构成和功能如何？

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In other words, HDL levels don't go up, but HDL composition and function improve.

换句话说，高密度脂蛋白胆固醇水平没有升高，但高密度脂蛋白的组成和功能却得以改善。

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However, the Tories argue that this change should be part of a full-scale review of the role, function and composition of the House of Lords.

ECONOMIST: Peers versus people, round two

In order for all of the sensors in the inner ear to function properly, the fluid needs to retain a certain volume, pressure and chemical composition.

CNN: Meniere's disease