名词
中文翻译：预张力
同义词：
['pre-stress', 'pre-load']
例句：
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1.The tension in the cable is due to the pretonic force exerted by the wind.
电缆的张力是由于风施加的预张力。
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2. The structure was designed to withstand the pretonic forces of gravity.
该结构设计成能承受重力的预张力。
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3. The engineers had to calculate the pretonic stresses in the beam before they could begin work.
工程师们必须计算梁中的预张力应力，才能开始工作。