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Finally, the real prototypeof multi-channel intelligence isotope thickness gauge is introduced, using 241Am as a radioactive element.

最后，给出了以241Am低能γ射线源作为工作源所实现的多通道智能化同位素测厚仪的特性和应用范围。

In the following, the whole frame ofmulti-channel intelligence isotope thickness gauge is given. The functions, the characteristics and the usage of multifunction card PCI-1710 are described. Furthermore, the developing process and the function modules of software are presented.

给出了多通道智能化同位素测厚仪的整体设计框架；PCI-1710卡的功能、特性、开发步骤以及在本系统中的具体应用；软件子系统的开发流程和主要功能模块。

Petrographic and REE and trace element geochemical studies of these rocks and Nd isotope analysis of amphibolite indicate that the protoliths of the Mengjiatun Formation complex are sandstone, mud-rich sandstone and island arc tholeiite.

对这些岩石的岩相学，稀土元素，微量元素地球化学的研究和斜长角闪岩Nd同位素的初步分析，表明孟家屯岩组的原岩建造为一套砂岩，富泥质砂岩和岛弧拉斑玄武岩组合。

Basalts plot in tholeiite in A.I-Al〓O〓 diagram. They have enriched LREE patterns without negative Eu anomaly. Their Zr/Y=4.4～6.5,〓=0.70790～0.70146, Th＞＞Ta,εNd values are between -1.8 and +3.7, indicating continental contamination. Pb isotope characteristics are close to that of typical tholeiitic flood basalt in the world.

Al〓O〓图上落入拉斑玄武岩区；稀土配分为LREE富集型，均无负Eu异常，Zr/Y＝4.4-6.5，〓＝0.70790～0.70146；Th＞＞Ta，ε〓介于-1.80～+3.7之间，都显示了陆壳混染的影响，Pb同位素与世界上典型拉斑质溢流玄武岩比较接近。

A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.

一种软质、银白色、放射性四价金属元素，同位素用作核反应能源，见于钍矿和独居石沙中。

The tests with the ideal granite, San Jose tonalite and the troctolite from Sybille quarry have demonstrated that the OIMT concept and numerical method are promising to isotope geothermometry.

通过对假想的封闭花岗岩体系、 San Jose英云闪长岩和Sybille采场橄长岩的实例分析可以看出，模式温度计算有良好的自洽性和应用前景。

Using the sign if icance of these characters in the aspect of sediment environment, th is paper analyzed C and O iso tope ofQ ian jiang Saline lake and educed conclu sion s: there are good relat ivity betw een the change of clim ate and sedim ent\r\nenvironm en t and the con tent's change of C and O iso tope from high to low; it is aobturated saline lake of\r\ninnerland tow ard Q ian jiang saline lake, and the con ten t of C and O iso tope was primarily decided that Ciso tope is - 5‰ and O isotope is - 2‰.

主要介绍了碳和氧同位素的地球化学特征，利用这些特征在沉积环境方面的指示意义分析了潜江盐湖的碳、氧同位素并得出了以下认识：碳、氧同位素值的高低变化与气候的变化和沉积环境的变化具有很好的相关性；潜江盐湖是一个封闭的内陆盐湖，就该湖而言，其碳同位素值可初步确定为- 5‰，其氧同位素值为- 2‰。

Basing on the separation of trace plutonium from uranium matrix,the operating parameters of MC-ICP-MS were studied and optimized for determining the isotope ratio of trace plutonium, such as the adjustment of resolution, selection of mode of ion extraction, elimination of background and interference, etc.

本工作在铀钚化学分离的基础上，对影响MC-ICP-MS法精确测量痕量钚同位素丰度比值的仪器条件进行了优化，研究了仪器分辨率、离子提取模式的选择、"背景和干扰"等参数的影响，探索研究了MC-ICP-MS上质量偏倚的校正方法。

The application of stable isotope tracer technique has rapidly increased in clinical pharmacokinetic studies over the past two decades.

近二十年来，稳定同位素示踪技术在临床药代动力学研究中有了快速发展。

It is used to some extent in pharmaceutical industry (used as special catalyst to produce antibiotics) and chemical industry, esp. in production of cephalosporin (whose effect is better than boron trifluoride ethyl ether complex compound), and also used for most advanced science, such as abstraction of fuel with high energy and of isotope B10 as well as chemical reagent.

在制药工业(在医药上作为生产抗生素的专用催化剂)、化学工业等行业中都有不同程度的使用，尤其在头孢抗菌药类，效果优于三氟化硼乙醚络合物，亦用于尖端科学，如高能燃料的提取及提取同位素B10，也可用作化学试剂

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％。