... spherical roller bearing 鼓形滚柱轴承 spherical spread 球面扩展 spherical spreading loss 球面扩展损耗 ...
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The conclusion has been spread to spherical lens retroreflection array. The basic idea of the spherical lens retroreflector and its key points of application have been proposed.
并把此结论推广到球透镜逆反射阵列，提出球透镜逆反射器的基本概念及应用的要点。
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