spherical source meaning in English

球面声源
球形源

Several evaporation sources , including the plane and spherical source , and their influence on film uniformity were studied
摘要分析了几种可能的实际蒸发源与薄膜均匀性的关系，其中包括扩展的平面蒸发源和曲面蒸发源。
When the ratio between the depth of the spherical surface and the radius of the source surface is less than 0 . 5 , the spherical source has little effect on films uniformity compared with the plane source , and when it is greater than 0 . 6 , the influence of spherical surface source on films uniformity should be considered
得到的分析结果表明：当蒸发源半径和夹具高度的比值小于1 / 17时，蒸发源可以被视为一个点面源；大于1 / 10时，应当把蒸发源视为面面源进行考虑。