工学 雷达影像 释 shadow 阴影 一个坡面背向雷达的照射方向，雷达信号无法到达该坡面及其相关区域，在雷达影像上相应的成像区域的信号为零的现象。
umbra 本影†，阴影[区]
计算机应用 计算机辅助设计与图形学 释文 shadow 阴影
- outer radius
- outer regular measure
- outer ring
- outer semidirect product
- outer-shell
- outer shell electron
- outer-shell electron
- outer Soddy center
- outer Soddy circle
- outer solar system
- outer solution
- outer space
- outer space disposal of radioactive waste
- outer space law
- Outer Space Treaty
- outer sphere
- outer-sphere complexation
- outer sphere mechanism
- outer-totalistic cellular automaton
- outer-town
- outer variable
- outer volume
- outfan
- out filed
- out-filed