放射性

Conventional radiochemical methods such as alpha spectrometry, neutron activation analysis, liquid scintillation system, fission track and gamma spectrometry for the quantitative determination of neptunium and plutonium often require complicated and time-consuming sample preparation and separation procedures.

研究环境中铀、镎、钚等长寿命放射性核素的精密测定，对保护公众安全和保护环境，对了解核设施的历史操作情况和现状，都具有重要意义。环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

Our technological equipment is rich, including global satellite positioning system GPS, geological radar meter (SIR-20, EKKO), seismograph, infrared detector (NEC-TH9100), ultrasonoscope, building structure diagnose apparatus, proton magnetometer, atomic absorption apparatus, ion chromatograph, gas chromatography, niton survey meter, and etc.

中心拥有各类先进的检测和探查仪器，如：GPS卫星定位仪、全站仪、数字水准仪、美国SIR-20地质雷达仪、加拿大EKKO地质雷达仪、地震仪、NEC红外热像仪、超声波检测仪、质子磁力仪等物探测量仪器，以及原子吸收仪、离子色谱仪、气相色谱仪、氡气探测仪等化学、放射性检测仪器。同时，不断加大对科研经费的投入，引进和开发地质雷达探测、瞬态面波探测、高密度电法等物理探测、远红外成像检测、GPS动静态定位技术、水土环境监测、研发高难度废水处理工艺、地质灾害防治措施及科技考古技术等新方法。

The smoke of cigarette contains extremely toxic Nicotine , Tar, nitrosamine ,Carbon monoxide and Radiation. This substances are directly or indirectly lead to lung cancer.

香烟烟雾中含有毒性极大的尼古丁、焦油、亚硝胺、一氧化碳、放射性物质，这些物质都是直接或间接导致肺癌发生的凶手。

It is essential to trap metastable noble gas atoms with high efficiency in the studies of interactions between cold atoms and in dating applications through the detection of radioactive isotopes.

高效率地冷却和囚禁亚稳态惰性元素原子，可用以研究冷原子间的相互作用，以及通过对放射性同位素的检测实现样品年代测定。

Article 56 As stipulated in Article 26, section 3 of this law the operating licenses of nonmedical radioisotopes and radioactive facilities are divided into junior, medium and senior grades.

第56条本法第二十六条第三款非医用放射性物质及可发生游离辐射设备之操作执照，分为初级、中级及高级三种，其操作范围依左列规定

He won a 922 Nobel Prize for developments that led to the discovery of isotopes in nonradioactive elements.

他因在非放射性元素的同位素的发现过程中取得重大进展而获922年诺贝尔奖

He won a1922Nobel Prize for developments that led to the discovery of isotope s in nonradioactive elements.

他因在非放射性元素的同位素的发现过程中取得重大进展而获1922年诺贝尔奖

Methods:Immunohistochemistry and nonradioactive in situ hybridization methods were used to detect the expression of p27mRNA and protein in 58 cases of osteoplastic tumors.

采用免疫组化和非放射性核酸原位杂交技术检测成骨性肿瘤中p27蛋白和mRNA的表达状况。

The Cerium-Tungsten electrode is nonradioactive and multifunctional. It possesses an excellent arcing feature and the arc current is low.

钨铈电极是一种非放射性、多用途的新型电极，它具有优良的电弧特性，维弧电流较小。

A highly sensitive and specific nonradioactive DNA probe developed from DNA cloning methods has been used to detect PaWB phytoplasma in infected paulownia hosts.

以DNA选殖的方法所开发之非放射性DNA探针，具有高敏感度与高特异性，已应用於泡桐簇叶病茵质体之侦测。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。