1.
Half-life of radioactive element carbon-14 is 5730 year.
放射性元素碳-14的半衰期为5730年。
2.
Synthesis of labelling new chelaling agent(H-73-10) with tritium and carbon-14
新型螯合剂H-73-10的碳-14和氚标记合成
3.
Relationships between mutagenic effects and treated methods of rice plants by ~(14)C
碳-14对水稻诱变效应与处理方法的关系
4.
Relationship between mutagenic effects and doses of ~(14)C on rice
碳-14对水稻的诱变效应与处理剂量的关系
5.
"carbon dating:The determination of the approximate age of an ancient object, such as an archaeological specimen, by measuring the amount of carbon 14 it contains."
碳定年(法):通过测量古代文物,如考古标本中碳-14的含量,从而测定该古物的大致年代。
6.
The coke formation on butadiene catalyst was studied in a flow system by means of carbon-14-labelled compounds.
在流动系统中,用碳-14标记化合物研究了丁二烯催化剂上的结焦过程.
7.
radiocarbon 14 dating method
放射性碳14测定年龄法
8.
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
9.
Study on Synthesis of (5Z, 14Z)-gadoleyl-1-ol;
5（Z），14（Z）-二十碳二烯-1-醇的合成研究
10.
A radiocarbondate of 11200±1000 BP or 9250±1000 BC has been yielded.
碳14测定的年代为距今11200±1000年(公元前9250±1000年)。
11.
The carbon 14 atoms oxidize to carbon dioxide which gets blown about and mixed up with lower atmosphere.
碳14原子氧化生成二氧化碳，向四周散去并与低空的大气混合。
12.
a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon 14.
用放射性同位素碳14测定有机物年龄的化学分析。
13.
Density Functional Theory Study on the Polarizability and Second-order Hyperpolarizability of 14-Vertex Bis-substituted Carborane and Metallaborane
14顶点双取代碳硼烷和金属硼烷极化率和二阶超极化率的DFT研究
14.
The two strains assimilated the same 14 glycogens, but 1 different, in API 20C AUX.
碳源同化实验结果显示:2株菌同化的碳源中有14种是相同的,有1种是不同的。
15.
Bulk carbon dioxide is typically stored as a liquid in storage tanks with capacities of 6, 14, 26, and 50 tons.
大量的二氧化碳典型地作为液体储存在容量为6、14、26、和50吨的储存罐里。
16.
These neutrons react with nitrogen nuclei, giving out a proton and producing the active carbon isotope 14.
这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
17.
Carbon-14 dating showed that the scepter dates from about 3250 BC, making it the oldest scepter found in Egypt.
碳14示踪法显示这根权杖来自公元前3250年，这使它成为至今在埃及发现的最古老的权杖。
18.
A type of atom specified by its atomic number, atomic mass, and energy state, such as carbon14.
核种由它的原子序数、原子量和能量状况具体确定的一种原子，如碳14