核素

It is used in solving species solubility,especially some nuclide Am, U, Pu,Np,Th, Ra,Te, and so on. This paper calculates species contribution of Americium by use of EQ3NR code.

本文以核素镅为例，计算了镅在水溶相中的存在形式，并模拟计算了不同pH值和不同∑CO3浓度条件下镅物种的化学形态分布优势。

The primary purpose of analytical chemistry involves finding out the amount and types of chemical species present in a system.

分析化学的主要目的是发现存在于系统中化学核素的数量和类型。

Coronary artery disease ; Exercise stress test ; Electrography ; Radionuclide imaging ; Coronary arteriogram

冠脉病变；运动负荷试验；心电图；核素显像；冠状动脉造影

Artificial radioactivity sources are widely applied to petroleum exploration and development and probably in ways of preventing pollution in soil environment.

人工放射源在石油勘探、开采等方面得到广泛应用，放射性核素可通过多种途径污染土壤环境。

What is represented by the symbol AZX is an atomic species called a nuclide of the element X, having an atomic number Z and a mass number A.

符号AZX代表的是元素X的一种核素，其原子序数是Z，质量数为A。

Master the conception, fundamental principle and characteristic of radionuclide tracer technique and autoradiography, the conception and classification of activation analysis.

掌握放射性核素示踪技术、放射自显影术的概念、基本原理、特点及活化分析的概念与分类。

In the International System of Units, the unit of radioactivity becquerel Harrell, called becquerels, symbol Bq, 1Bq equal to 1 second of radionuclides in the nucleus occurred within a decay, that decay 1Bq = 1 times / sec .

在国际单位制中，放射性活度的单位为贝可勒尔，简称贝可，符号为Bq，1Bq等于放射性核素在1秒钟内有1个原子核发生衰变，即1Bq=1次衰变/秒。

In some kinds of beta decay, a nuclide loses surplus positive charge by emitting a positron (in the same event, a proton becomes a neutron, and neutrinos are also given off).

以某种贝它衰减，一个核素靠发出一个正电子失去剩余正电荷(在相同的事件中，一个质子变成一个中子，而且也发射微中子)。

Due to the better characteristics of Bismuth and Molybdenum, they have a wide potential use in practice.

由于铋、钼有很好的物理特性，实际应用很广，另外，这两个核素的中子全截面与共振参数现有数据存在一些分歧。

Soft tissues of bivalves had high concentration factors for 110mAg and 65Zn.

和简单角毛藻对上述放射性核素的浓集动力学。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。