查询词典 sealed radioactive source

The decay of ~(99m)Tc source was used to verify experimentally that in the measurement of the number of atoms of a radioactive isotope in a sample at time t_0, the error introduced through the inaccuracy of its decay constant can be reduced to a much smaller value by the careful selection of the time of measurement or measurements of its radioactivity at around one life time (1/λ) after t_0 and doing the calculation.

本文用~(99m)Tc源的衰变实验证明了：在测量一个样品中在t_0时的一种放射性同位素的原子数时只需精心选择一次或多次测量其放射性的时刻在t_0后约该同位素的一个寿期(1/λ)，并进行计算，则由它的衰变常数或其半衰期(T1/2)的不准确性而引进的误差可以被降低到较小值。

In order to meet the safety requirement of radioactivity logging of oil industry, the radioactive source status monitor is developed.

根据石油行业放射性测井工作的安全需要，研制了放射性源状态监测仪。

The number of charges on the resulting polymer ions is reduced to unity in a radioactive source.

在放射性源的作用下，所得的聚合物离子的电荷数减少至1。

Theoretically, there are infinite arrangements of position and exposure time of the radioactive source for a given treatment.

理论上对一固定治疗方式射源位置及暴露时闻有无限多的排列方式。

Unfortunately, state officials decided the radioactive source under the hood would not be safe for widespread use.

不幸的是，国家官员决定放射源引擎盖下不会安全的广泛使用。

You can take real random data from the mouse movements of the user, his key strike delays, some radioactive source connected to your computer or whatever you want.

你可以从用户的鼠标移动真正的随机数据，他的主要罢工延误，一些放射源连接到电脑或任何你想要的。

There are two types of irradiation process: Gamma Irradiation from a radioactive source and high energy Electron Irradiation from an accelerator.

辐射过程有两种类型：辐射源发出的伽马射线和加速器发出的高能电子辐射。

Experts noted that the current urban living environment is the main source of radioactive hazards of indoor radon and radioelement content standard building materials.

专家指出，目前城市生活环境中主要放射性危害的来源有室内氡气及放射性元素含量超标的建筑材料等。

The invention comprises a method of more efficient detecting of radioactivity from a low energy radioactive source and apparatus therefor.

本发明包括一种更有效地检测来自低能放射源的放射性的方法以及所用的装置。

Indeed the use of an electron beam or X-rays for irradiation overcomes the need for a radioactive source altogether .

用电子束或X-射线进行辐照确实完全解除了对某种放射源的需要。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"