Before you can use any of the custom Gmail gadgets, you have to first enable a setting in Labs in order to use this feature.
在你开始使用其他定制的Gmail小工具之前，你需要开启实验室中的一些设置后才能使用这一功能。
In order to obtain the facial motion data from the source video, we must first carry out the detection and tracking of facial feature.
为了得到源视频的脸部运动运动数据，人脸特征检测和人脸特征跟踪是两个先决条件。
According to the feature of contacting measurement, the dissertation first puts forward the twice-sampling planning method for free-form surface in order to improve measuring efficiency.
根据接触测量的特点，为提高测量效率，本文提出了一种两次采样的曲面数字化规划方法。
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