电离

Methods Ionization chamber and film dosimetry methods were used to compare the angular dose distribution, point source approximation in the area close to the source,the coincidence of inverse square law of source strength and the scatter and attenuation in water medium,of a cylindrical, miniature 192 Ir source and "the ideal point source".

用电离室法与胶片法实测国产192Ir放射源空间剂量角分布、点源的近似性与源强反平方定律的符合性以及水介质散射与衰减特性，并与点源剂量分布特性比较。

After simplifying the relation between Ne and time, the formula of 3D parallelbeam tomography is theoretically deduced and proved to be the same as the 2D CIT inversion formula derived by K.C. Yeh when it is applied to 2D cases.

在二维情况下，本文导出的三维平行束层析重建公式与Yeh等给出的二维电离层层析重建公式相同。

After simplifying the relation between Ne and time, the formula of 3-D parallel-beam tomography is theoretically deduced and proved to be the same as the 2-D CIT inversion formula derived by K.C. Yeh when it is applied to 2-D cases.

在二维情况下，本文导出的三维平行束层析重建公式与Yeh等给出的二维电离层层析重建公式相同。

To prevent the current leakage of the ionization chamber a three co-axis insulator is used, and the result is good.

为防止由于漏电造成的信号损失，本文采用了三同轴绝缘子的方案很好地实现了电离室的绝缘。

The trajectory of the incident particles is parallel to the direction of the electric field in the ionization chamber.

被探测粒子的轨迹与电离室的电场方向平行。

The structure and performance tests of the 4πγ ionizationchamber(i.e.well-type ionization chamber)are described.

本文介绍了我们设计的4πγ电离室的结构及性能实验。

With the introduction of the principle of automatic exposure control system,this paper discusses the relation between ionization chamber and photographic position,and analyzes its effect on X-ray image quality.

介绍自动曝光控制系统原理的基础上，通过具体的实验讨论了电离室与摄影部关系的选择及其对X线图像质量的影响。

The ionization chamber in a water phantom was used to measure the central point dose and another point dose.

用电离室和水箱验证等中心和偏离点的绝对剂量。

The leakage resistance is due to the insulator of the ionization chamber and the coax cable.

泄漏电阻是由电离室和同轴电缆的绝缘体引起的。

The design of micro ionization chamber,signal detection circuits and installation technology is expatiated.

介绍了微型电离室设计和信号检测电路及安装工艺，并给出了测试结果。

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。