Through the analysis of the model and of its water-lever control system, it illustrates the advantages of the interactive teaching methods.

通过对液位系统建模及根轨迹绘制实例的分析，探讨了交互式教学方式的优势。

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Mr Orszag is right that, if implemented, this provision will represent an important lever of cost control.

奥尔·斯扎克先生认为如若实施这一税种了，该条款会成为控制开支的一个重要手段，他是对的。

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NIBCO swing check valves are available with an outside lever and weight. The lever and weight arrangement is used to maintain exterior control over disc movement.

尼伯科旋启式止回阀可配置外部操纵杆和压铁。操纵杆和压铁用于对阀瓣进行外部控制。

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There is also a sense that Mr Mbeki fears losing a lever of control.

ECONOMIST: South Africa

He uses an automatic car in which he pulls a hand lever to control the accelerator and brake pedals.

BBC: Geoff Squibb was left paralysed after a crash

Chancellor Merkel sees this as an important lever of control over the zone's banks, and she will argue that gives her room to manoeuvre.

BBC: Euro: Merkel gives concessions to Italy and Spain