结合应用实践，论述了差分gps在导弹火控系统精度试验中的应用方法、测量精度及其发展前景。
Applied method and measurement accuracy of difference GPS technology on missile fire control system and its development prospect are introduced based on applied practice.
提出了一种新的基于双目视觉和灰度差分的粒径测量方法，并开发了相应的查询系统。
A new particle size measurement technique based on the binocular vision and the particle image gray difference was suggested and a corresponding inquiry system was developed.
SANOA长光程差分吸收光谱监测系统，适用于空气自动监测子站SO 2、NO2的测量。
SANOA long-path differential optical absorption spectroscopy system is used to monitoring SO2, NO2 concentration in air automatic monitoring sub-station.
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