three-year cycle

After the Variscan Cycle, the global tectonic framework underwent three major adjustments.

华力西旋回后，全球构造格局曾发生过三次重大的变化：第一次是晚三叠世&侏罗纪初；

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TBA consists of three major steps& Pre-task, Task cycle and Language focus, providing students with plenty of opportunities for language practice. This approach is also effective for cooperative learning and the development of learner autonomy.

任务教学法从布置任务、完成任务到语言点处理，给学生提供丰富的语言练习机会，有利于培养学生的合作学习和自主学习的精神。

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Population of Dense V-type Three-level Medium in Few-cycle Laser Pulses

少周期脉冲在稠密V型三能级介质中传播时的粒子布居演化

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A gas turbine is composed of the three major parts, among which each part completes one thermodynamic cycle.

燃气轮机由下列三个主要部件组成，每个主要部件均完成一个热力过程。

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A three-dimensional ocean carbon cycle model and a simple terrestrial biosphere model are used to simulate anthropogenic CO2 uptake by the ocean and terrestrial biosphere under the IPCC ( Intergovernmental Panel on Climate Change) scenarios for future atmospheric Pco2 levels.

用三维海洋碳循环模式和一个简单的陆地生物圈模式计算了IPCC（政府间气候变化委员会）未来大气CO2情景中海洋和生物圈的吸收，并结合上地变化的资料得出燃料的排放值。

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