isotopes of carbon meaning in English
碳的同位素
Examples
- A radioactive isotope of carbon , especially carbon14
放射性碳碳的一种放射性同位素，尤指碳14 - Analyzing archaeological remains of bone and hair for their abundances of the stable isotopes of carbon and nitrogen ( carbon 13 and nitrogen 15 ) can provide information about a person ' s diet
从考古遗址出土的遗骸，分析骨头、毛发中碳13 、氮15等稳定同位素的丰度，可以得到有关饮食的资讯。 - The molecules were acting like enzymes , and yet they were much , much smaller : the molecular weight of a taml is about 500 daltons ( a dalton is equal to one twelfth the mass of carbon 12 , the most abundant isotope of carbon ) , whereas the weight of horseradish peroxidase , a relatively small enzyme , is about 40 , 000 daltons
这些分子的作用方式很像酵素，不过远比酵素小得多：一个taml的分子量大约是500道尔顿（ 1道尔顿等于氢原子的质量） ；相较之下，在酵素里算小的辣根过氧化酶，分子量就约有四万道尔顿。