名词
中文翻译：射线向量
同义词：
['ray vector', 'ray vector field', 'ray vector field', 'ray vector field', 'ray vector field']
例句：
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1. The ray vector from the sun to the earth is about 290,000 kilometers long.
太阳到地球的射线向量大约为29万公里长。
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2. The ray vector field of the light source is used to calculate the distance between the light source and the observer.
光源的射线向量场用于计算光源与观察者之间的距离。
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3. The ray vector field in the image processing domain is used to perform edge detection and featureextraction.
在图像处理领域，射线向量场用于执行边缘检测和特征提取。