Tritium is one of the mildest radioactive isotopes.氚是最和缓的放射性同位素之一.More reactive are the heavier isotopes of hydrogen, deuterium and tritium.更为活跃的是氢的较重同位素, 氘和氚.Tritium has a half - life of 12.4 years.氚的半衰期为12.4年,地球形成时的氚早已...
...tritium, a radioactive isotope of hydrogen.氢的放射性同位素氚Tritium has a half - life of 12.4 years.氚的半衰期为12.4年,地球形成时的氚早已不存在.The Energy Secretary hopes to bring on line a safer new tritium production reactor...能源大臣希望能投产一座更安全的...
两名男性之间发生的双方自愿的性接触可能会构成犯罪。Consensual sexual contact between two males can be a criminal activity.听这门课纯粹是自愿的。Attendance on the course is purely voluntary.甚至自愿的革新者也可能面临着资本拮据的困难.Even willing innovators may be faced with capi...
You need, firstly, a strong independent board of directors and secondly, an experienced and dedicated staff.你首先需要一个强大的独立董事会，其次需要一批富有经验并且爱岗敬业的员工。Firstly, they must make certain that their pension needs are adequately cate...