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
- nifelat
- nifesphere
- NIFS
- Nigantha Nataputta
- NIGCOMSAT-1R
- Nigel Cross
- Nigensha Co, Ltd
- Niger
- Niger-Congo group
- Niger Delta
- Niger expelled the head of a French military advisory mission
- Niger-France Corporation Agreement
- Nigeria
- Nigeria National Film Institute
- Nigerian General Strike of 1945
- Nigerian Literature
- Nigerian National Museum
- Nigerian People's Party
- Nigerians
- Nigerian Youth Movement
- Nigerien Party for Democracy and Socialism
- Nigerien Progressive Party
- Nigeriens
- Niger-Kordofanian
- Niger River