结合主成分变换原理和不同的数据处理过程，可以用不同的方式实现土地利用变化信息的自动发现。
Combining the principle of the Principal Component Transform and various data processing methods, automatic detection of land using changing information can be implemented by different methods.
运用遥感和地理信息系统等技术，按照景观生态学的原理，对海南生态环境现状进行了评价，并对近十年来的变化进行了对比分析。
Evaluation and comparison of the eco environmental quality of Hainan Island was carried out with the aid of remote sensing and GIS and in line with the principle of landscape ecology.
论文第二章介绍了利用相位差变化率和多普勒变化率的定位原理，并且通过系统可观测性分析证明了其与角度信息联合利用跟踪目标的可行性。
In chapter 2, the basic principle and observability for target location utilizing phase difference rate-of-change and Doppler rate-of-change information of emitter is discussed.
介绍了一种基于多光束原理的薄膜应力测试方法，通过对反射光光点间距变化的检测，可以实时得到应力的信息。
A new method based on multi - beam to measure the stress of optical thin film is introduced the stress can be obtained by measuring the relative distances between the reflected light spots.
介绍了一种基于多光束原理的薄膜应力测试方法，通过对反射光光点间距变化的检测，可以实时得到应力的信息。
A new method based on multi - beam to measure the stress of optical thin film is introduced the stress can be obtained by measuring the relative distances between the reflected light spots.
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