光学、声学 光学 visual line 视线 line of sight 视线†
line of sight 视线 sight 视线；观测，瞄准
line of sight; line of vision; visual line 视线
计算机应用 计算机辅助设计与图形学 释文 view ray 视线
- Historical Evaluations and Judgments
- historical events
- Historical Events in Their Entirety: A Rearrangement of Zizhi Tongjian
- Historical Events in Their Entirety,block-printed edition by Yanlingjunzhai,second year of Chunxi era,Song Dynasty
- historical evidence
- historical evolutionism
- Historical Excerpts
- historical exhibition
- historical explanation
- historical facts
- historical fatalism
- Historical figures of water science and technology in China
- historical f ilm
- historical geographical names
- historical geography
- historical geography information system
- historical geomorphology
- historical idealism
- historical indeterminism
- historical institutionalism
- historical instruments
- Historical Journal
- historical knowledge
- Historical Lessons
- Historical Linguistics