The study use MODIS data and VI principle and VI long time serial variation to distinguish the investigation area 'vegetation cover. Finally, making off 15 kinds and the overall accuracy is 73.71%.

该研究主要利用MODIS高分辨率数据，运用植被指数原理和及其植被指数的长时间序列变化，将研究区内植被覆盖分为15个类别，总体精度为73.71%。

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For the first time, the fuzzy optimization theory is applied to study the principle and method of the two objective fuzzy reliability optimum design of acceleration switch with cross springs.

首次应用模糊优化理论研究叉簧式加速度开关的双目标模糊可靠性优化设计原理和方法。

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Objective To study the effect of the priming principle and the timing principle on the onset time of cisatracurium.

目的研究预注法及限时法能否缩短顺阿曲库铵的起效时间。

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