The convicts were locked up in their cells.犯人们被监禁在自己的牢房内。Two of the convicts have escaped from prison.两名犯人越狱逃跑了.In the past, British convicts could be sentenced to transportation.过去, 英国的囚犯可能会被判流放.At that time it was cust...
a cryogenic storage system低温冷藏系统Trapping gas pump include: adsorption, such as pumps and cryogenic pumps.气体捕集泵包括: 吸附泵和低温泵等.Foamed plastic materials containing many small cells which are not connected are good cryogenic i...