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
- soil remediation
- soil remediation technique
- soil remote sensing
- soil replacement
- soil reservoir
- soil residual acidity
- soil residual alkalinity
- soil resistivity
- soil resources
- soil respiration
- soil restoration
- soil rheological properties
- Soils
- soil salinity
- soil salinization
- soil salinization and alkalization in China
- soil salt content
- soil sampling
- soil saturated hydraulic conductivity
- soil saturated water content
- soil saturation extract
- Soil Science
- soil science
- Soil Science and Plant Nutrition
- soil science education in China