two salvage boats at sea / man on bow holds geiger counter / geiger counter dial / bathythermograph dropped into water off side of ship / instrument... - 科學樣本 個影片檔及 b 捲影像00:53
on board uss burleson, crates lowered to deck / vs sailor uses electric shears to cut sheep's wool / he spreads ointment over sheep's bare skin / vs... - 科學樣本 個影片檔及 b 捲影像01:29
energetic mosquito pupae and lavae wriggle in a beaker full of water in a laboratory, uk. - 科學樣本 個影片檔及 b 捲影像01:24
close-up profile view of mosquito pupae and lavae attaching themselves to the surface of water in a beaker, uk. - 科學樣本 個影片檔及 b 捲影像01:38蚊子
close-up view of mosquito pupae and lavae wriggling in a beaker filled with water, uk. - 科學樣本 個影片檔及 b 捲影像00:48
sequence showing a scientific test to determine the weight of a leech before and after it has fed on human blood, uk. - 科學樣本 個影片檔及 b 捲影像00:43水蛭
sequence showing a long tapeworm that has been strung up inside a specimen jar, uk. - 科學樣本 個影片檔及 b 捲影像00:13
close up of park ranger collecting water sample from lake / vineyard, utah, united states - 科學樣本 個影片檔及 b 捲影像00:20
close up of hands pouring water sample in test tube / vineyard, utah, united states - 科學樣本 個影片檔及 b 捲影像00:14
wide shot of park ranger collecting water sample from lake / vineyard, utah, united states - 科學樣本 個影片檔及 b 捲影像00:31