scientist, who is a wheelchair-user, conducts a chemical analysis of a small sample of paint, taken from a suspect's clothing, at the forensics... - 掃描電子顯微鏡 個影片檔及 b 捲影像00:18
scientists producing, testing, and analyzing specific formulas of steel with scanning electron microscope / united kingdom - 掃描電子顯微鏡 個影片檔及 b 捲影像00:34