It is the important characteristic of SAS data warehouse technology that the operation of integrated type formed a coherent whole from the data source to the data warehouse.
从数据源到数据仓库一气呵成的集成式的操作，这是SAS数据仓库技术的重要特点。
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Optic coherent topography (OCT), ultrasonic biomicroscopy (UBM) and laser flare cell meter (LFCM) examination were performed before and after operation.
Time domain synchronous averaging can reduce the signal not coherent to rotation frequency effectively, and extract the repetitive signals directly related to machine operation condition.