求翻译：在实验范围内，O2和N2O浓度在低范围变化，对N2O分解无显著影响；N2O分解温度催化活性随着SO2浓度的增加而呈递减趋势升高，当SO2浓度增大到一定程度后，N2O分解温度不再有明显变化对催化剂的影响减弱是什么意思？

Within the experimental range, o2 and N2O concentration in the low range, no significant influence on N2O decomposition; increased n2o decomposition temperature of the catalytic activity showed a decreasing trend with so2 concentration increases, so2 concentration was increased to a certain extent,

Within the scope of the test, O N 2 and 2 in the low-range O concentration changes in decomposition N O 2 have no significant effect of decomposition temperature N 2O SO2 catalytic activity as an increase in the concentration of the trend and presented SO rise, when 2 increase in the concentration t

In the experimental scope, O2 and the N2O density in the low scope change, decomposes to N2O not obviously affects; The N2O decomposition temperature catalytic activity assumes the degression tendency ascension along with the SO2 density increase, after the SO2 density increases to certain degree, t

In the context of experimental, O2 and N2O concentration changes in low range, no significant effects on decomposition of N2O; N2O decomposition temperature catalytic activity as SO2 concentrations increasing and a decreasing trend of higher SO2 concentration increases to a certain extent, N2O decom

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