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...
走教堂和城堡之间的碎石小道。Take the metalled path running between the church and the fort.成千上万的尸体仍然被埋在碎石瓦砾下。Thousands of bodies are still buried under the rubble.偶尔会有碎石滚下，扬起大团尘土，噼啪作响。Occasionally scree fell in a shower of dust and no...
He is a wholesale merchant.他是个批发商。Our business includes wholesale of high - quality coffee beans, Ceylon tea, coffee - making appliances and accessories.经营各国优质咖啡豆 、 锡兰红茶及咖啡机等批发业务.In a desperate attempt to stave off defea...
A soft ferritic stainless steel was introduced which could be manufactured the commemorative and entertaining coin.介绍一种可以制作纪念币以及娱乐用币材料的软质铁素体不锈钢.Soft tones of blue and grey create a clean, bright look.蓝色和灰色的柔和色调营造出明快、亮丽的视...
The Frankish duke wept bitterly to see his soldiers massacred.那法兰克大公悲痛地哭着看着自已的士兵被残杀.The invading army had massacred many of the garrison after capitulation.侵略军在守军投降后仍将多人屠杀了.Troops indiscriminately massacred the defencele...