...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...
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...
在早晨天空的映照下,那些松树呈黑色.The pine trees were black against the morning sky.教堂的尖塔在天空的映衬下宛如指向天空的手指.The church tower stood against the sky like a finger pointing towards heaven.探照灯和焰火使得天空的颜色千变万化.The search lights and the fireworks...
She dropped out after 20 kilometres with stomach trouble.20公里后她因胃痛而退出了比赛。By my reckoning we were seven or eight kilometres from Borj Mechaab.据我估计我们离梅卡巴堡有七八公里远。The vehicles have a top speed of 80 kilometres per hour.这些车辆最...
没人觉察出他所承担的痛苦。No one suspected the anguish he carried on his shoulders.我能觉察到有什么事很不对头。I could see that something was terribly wrong.普罗斯特已经觉察到可能会发生什么事。Prost had sensed what might happen....
He is a typical henpecked husband.他是个典型的“妻管严”.Shanghai men are jokingly called henpecked husbands.上海男人常被戏谑为“妻管严”.After getting married, he turns to be henpecked.结婚后他完全变成了“气管炎”....