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.The substituent is deuterium.取代基是重氢.the nucleus of a deuterium atom氘原子的原子核Deuterium is widely used in the study of reaction mec...
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.Deuterium is widely used in the study of reaction mechanisms and in spectroscopic studies.氘广泛地应用于反应机理的研究和光谱分析.The substituent i...
The new shopping centre was constructed at a cost of 1.1 million.新建成的购物中心耗资110万。It was a good table too, sturdily constructed of elm.这也是张很不错的桌子，榆木的，很结实。The lungs are in fact constructed of thousands of tiny tubes.肺实际上由上千...