各国的电视扫描制式不尽相同，在中国是每秒25帧，每帧625行。
National television scanning system is different, in China is 25 frames per second, each frame of 625 lines.
为了实现多制式功能，提出了扫描行变换的方法，并对其关键性的技术进行了研究。
In order to realize the multi control function for the system, the scan row conversion method is adapted. Moreover, the concerned key techniques of the system are also analyzed in the paper.
比较通用的方法是差示扫描量热法(dsc)和调制式扫描量热法(mdsc)。
Differential scanning calorimetry (DSC) and modulated differential scanning calorimetry (MDSC) are universal at present.
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