...收率基本相同 玻璃只透过可见光，对 的红外线不透明 m µ λ 3 > 三、辐射强度(I)：(或定向辐射强度) Sr —立体角（Solid angles）的单位，球面度 辐射强度：物体表面朝着某给定方向、对垂直于该 方向的单位投影面积而言，在单位时间、单位立体 角内所发射的全波...
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two solid angles 双角度
Laser beam is propagated in the long range and diffused by the target in the solid angle n. So the real reflected optical energy is very weak.
激光束经过远距离传输,又经目标漫反射(在立体角π内都反射能量),实际返回的光能很弱。
参考来源 - 应用激光主动成像探测小暗目标的技术研究First of all, a new solid angle ray-tracing simulation with its three-dimension soundray model is proposed here.
首先,在理论上提出了一种新的声线模拟计算方法——立体角算法和相应的声线三维模型。
参考来源 - 厅堂音质设计中声线模拟立体角分频并行计算和应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N a geometric surface consisting of lines originating from a common point (the vertex) and passing through a closed curve or polygon: measured in steradians 立体角
From certain angles, the building's roof appears to float above the solid walls due to the narrow window that extends around the entire structure.
由于狭窄的窗口围绕整个结构延伸，从某些角度上看去，建筑物的屋顶似乎漂浮在坚实的墙壁上。
Once the proper alignments and angles have been achieved, the cross-members are ready for welding. A solid fillet should be welded around the entire circumference of each cross-member tube.
一旦正确的路线和角度已经实现，交叉成员焊接准备。一个坚实的鱼片应该管焊接周围人的整个圆周每个交叉。
Base course treatment - the base course surface shall be smooth, solid and free from acute angles, floating dust or water, and go through good waterproof node processing as required in the design.
基层处理——基层表面应平整，坚实、无尖锐角、浮尘和明水，并按设计要求做好防水节点处理。
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