parabolic girder
... parabolic curve 抛物曲线 parabolic girder 抛物线梁 parabolic shell 抛物线状薄壳 ...
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认为在一定锚固预应力作用下，梁底反力沿梁长呈二次抛物线分布，而直线及均匀分布。
It is put forward that under a definite prestressed force, the distribution discipline of the counterforce along the length of beam is quadratic parabola rather than linear or uniform one.
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