单纯的聚合物高分子材料，由于力学性能低，使其应用受到限制。
Poor mechanical property of single macromolecule polymer material limit its clinical application.
当然，它们的强度和耐热性都较低，应用的范围受到限制。
Of course, their strength and heat resistance are low, restricted range of applications.
通用的需求失效模型在某些反应堆的应用中受到限制。
Yet the application of usual "failure-on-demand model" in some reactors is restricted.
通用的需求失效模型在某些反应堆的应用中受到限制。
Yet the application of usual "failure-on-demand model" in some reactors is restricted.
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