季节转换现象的出现是因为地球围绕着太阳运转时，发生倾斜现象。
The seasons happen because the Earth tilts as it goes around the Sun.
分析客车在制造及营运过程中出现的车身倾斜现象，并对问题产生的原因及解决方案进行探计。
Focusing on the bodywork incline of the bus and coach during manufacturing and operating, the factors are analyzed in this paper.
因此提出了改进的偏折层析滤波反投影算法，数值模拟表明，改进算法在有效抑制倾斜现象的同时，对重建结果不会造成明显的失真。
Results show that the effect of projection noise on the reconstructed fields is represented by a slope function related to the filter used in deflection tomographic filtered back-projection algorithm.
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