氧气力量 The Power Of Oxygen

Crawley, West Sussex. 　　Several demonstrations / experiments involving oxygen are seen at the laboratories of Britain's biggest oxygen producer (unnamed). 　　A man wearing goggles uses an oxyacetylene cutter to slice through a slab of metal; sparks fly out. Various shots show a demonstration of a portable oxygen resuscitator; a woman lies on the ground beside a plug socket and plug ...