而且聚合速率稳定，聚合物的组成分布均匀。
The polymerization rate is stable and the composition distribution of the polymer is uniform.
且与光合速率稳定阶段基本一致。因此说光合功能衰退与叶片中保护酶系的下降和MDA的积累有内在的关系。
So there are inherent relations between photosynthesis function decline and fall of the Protective Enzyme System and accumulate of MDA.
对三轴飞行模拟转台的指向误差、速率稳定度误差及幅相误差进行了研究，对其指向误差给出了具体算法，并针对一种转台的具体精度指标而算出了各项误差。
This paper first studies the pointing error, rate stability error, and amplitude phase error of the flight simulation turntable, then gives out specific calculation method for pointing error.
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