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...
果酱和蜜饯的制作方法recipes for jams and preserves母亲做了一些蜜饯洋李.Mother made some plum preserves.母亲每年都要贮存蜜饯和果冻.Mother puts up a keeping [ store ] of preserved fruits and jellies every year....
They will be in raptures over the French countryside.他们会深深爱上法国的乡村。His goal sent the crowd into raptures.他的进球使观众们欣喜若狂。They will be in raptures over the French countryside...他们会深深爱上法国的乡村。Vasari also went into raptures abou...
Britain was signalling its readiness to have the embargo lifted.英国表示愿意取消贸易禁令。The ship was impounded under the terms of the UN trade embargo...该船因触犯联合国贸易禁运条款而被扣押。Agreement in Cairo should be topped by an end to the oil em...
Click on this icon to align or justify text.点击这个图标使文本排齐。A tripod will be useful to align and steady the camera...三脚架有助于调准和稳定相机。Align the ruler and the middle of the paper.使尺子与纸张的中部成一条直线.A tripod will be useful to align a...