扩展束 meaning in English
exotropia expanded beam
Examples
- Abstract : the rules of ganssian light beams extended by lens are disscussed firstey , and the relation between the optimum waist extended and focal distance of the lens are found out
文摘:首次讨论了用透镜来扩展高斯光束的一般规律，找出了最佳扩展束腰与透镜焦距的关系