The seasonal difference in sunshine duration was evident, and decreasingamplitude in season was winter, summer, autumn and spring in turn.
日照时数季节差异较为明显，趋势明显程度依次为冬季>夏季>秋季>春季；
2
With the nitrogen application, the nitrate nitrogen contents in spinach leaves were only dramatically decreased by Mo application at growth prophase, the (decreasing) amplitude was 21.2%.
施氮条件下，施钼仅显著降低了菠菜生长前期叶片中硝态氮含量，降幅达21 2%。
3
A new approach for decreasing the amplitude characteristic deviation of Gaussian filter in surface roughness measurements is presented.