By this method, more than forty carboxylic acids were detected in coal gasification wastewater and quantitatively determined.
用本方法检出煤气化废水中的羧酸类化合物四十余种，并进行了定量测定。
This system detected motion target using difference image method through threshold image segmentation, then automatically tracked target by using centroid tracking algorithm.
该系统运用差分图像法，通过阈值图像分割来检测运动目标，并采用形心跟踪算法来自动跟踪目标。
By this method the sensor drift can be detected accurately and the measurement error caused by sensor drift may be corrected at the same time.
该方法能够对传感器漂移故障做出判定，同时可实现测量误差的修正。
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