As an electric controlled element, electronic expansion valves have many advantages which traditional heat expansion valves don't have, such as high precision, and fast and correct action.

作为电控元件，电子膨胀阀具有传统的热力膨胀阀所不具备的精度高，动作快速且准确的优点。

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As a guide element of urban expansion and the urban structure framework, road traffic has a complicated relation with spatial form evolution of old cities.

作为城市拓展导向要素以及城市结构骨架的道路交通，与旧城空间形态演变之间存在复杂的关系。

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To solve this problem, the nonlinear finite element calculation in parallel with model tests are used to study the expansion water seal, and a modified program is identified accordingly.

为解决此工程难题，应用有限元对伸缩式水封进行非线性模拟计算，同时进行模型试验，研究确定了闸门采用伸缩式水封的改造方案。

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Another key element,he said, is the expansion of regional markets through intra-African trade.

VOA: standard.2009.10.20

Another new element is Schengen's expansion.

ECONOMIST: Immigration

And clearly, unemployment insurance is very much an element of the same kind of proposal the payroll tax cut extension and expansion is, and that it goes directly to assisting Americans make ends meet, and it has extremely positive impacts on the economy, on economic growth and job creation.

WHITEHOUSE: Press Briefing

Familiarity with family business can be a key element for Members of Congress who want to know how government policy will impact business expansion and job creation.

FORBES: The Key To Job Growth Is On The Kitchen Table