二次反射;人工爆炸
Under this condition, the stray light of a Cassegrain telescope comes from diffuse reflection of telescope tube wall, directly reflected light by a horseshoe mirror, diffuse reflection light by secondary mirror mount and is symmetrically distributed.
在这种条件下,卡塞格伦望远镜系统杂散光成对称分布,主要来源于望远镜筒壁的漫反射光、马蹄镜的直接反射光和次镜支架的漫反射光。
The secondary logistics distribution is the last link of supply chain, facing the terminal user directly, is the eventual reflection of enterprise profit.
成品油二次物流配送是供应链的最后一个环节,它直接面向终端用户,最终实现企业利润。
Reflection on School-Based Course Developing of Primary& Secondary School Teachers'Continuing Education
中小学教师继续教育校本课程开发的思考
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