The study was made by the research methods of taking fixed position high speed photographs on the spot, film analysis, mathematical statistics and so forth.
采用现场定点高速摄影、影片解析及数理统计等研究方法。
The study was made by the research methods of taking fixed position high speed photographs on the spot, film analysis, mathematical statistics and so forth.
采用现场定点高速摄影、影片解析及数理统计等研究方法。
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