Two principles have been proposed for the active monitoring method, adopted to the AR Coating semiconductor lasers and based on detecting the derivatives of the outputs from the facets to be coated.
理论研究导出了用微分功率输出监控半导体激光器端面减反射膜制备的主动监控法的两条原则。
This method can realizes active, real-time, long-term monitoring and is noticeable for its characteristics of cheap, practical and great maintainability.
这种结构混凝土监测方法具有实时、主动、长期监测的特点，且成本不高，易于维护，实用性较强。
According to such method and the virtual instrument technique, an active damage monitoring system for composites is developed.
根据此方法及虚拟仪器技术，设计开发了相应的复合材料结构损伤监测系统。
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