平面中的通量和空间中的通量有很大区别，在平面中，通量仅仅是线积分的另一种形式，而在空间中，它表现为曲面积分。
Flux looks quite different in the plane and in space because, in the plane, it is just another kind of line integral, while in space it is a surface integral.
在探测器的主要灵敏面内，相对响应度与到探测器中心的距离表现为二次曲面关系。
The responsivity over the sensitive area has a quadratic relation with distance to detector center within the main sensitive area.
艺术表现力——外层金属板可选择多种材料和颜色，并可形成各种复杂空间曲面。
Artistic express-a variety of materials and colors is available for the exterior metal plate, and various complex curving surfaces can be provided.
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