送交者: james_hussein_bond 于 2008-06-15, 12:06:35:
回答: 老酒打猎上山,他撞到我的枪口了。今年的物理炸药奖看来要给这位美国教授了。 由 JFF 于 2008-06-15, 10:39:14:
Do you know why all cryogenics equipment MUST have safety valves? Thermos all have caps that easily break away under a small pressure so it can act as a safety valve.