英国第一颗氢弹的研发历程充满挑战。videisgratistv日本

　　In 1957, Britain exploded its first megaton hydrogen bomb - codenamed Operation Grapple X. It was the culmination of an extraordinary scientific project, which against almost insuperable odds turned Britain into a nuclear superpower. This is the inside story of how Britain got 'the bomb'. 　　The BBC has been granted unprecedented access to the top-secret nuclear research facility ... (展开全部)