查询词典 sealed radioactive source

Many types of natural radioactive nuclide, is widely distributed.

天然放射性核素种类很多，分布很广。

Because of the exchange process between the organism and the external environment which they live in, there are Crude radioactive nuclide in most propagation foods at different levels

由于生物体与其生存的外环境之间固有的物质交换过程，在绝大多数动植物性食品中都不同程度含有天然放射性物质。

Because of the administration and equipment, the radiation accident in which radioactive nuclide and rays do harm to the public or the workers directly or indirectly occurs sometimes.

由于管理或设备的原因，核技术应用中放射性核素、射线直接或间接对工作人员或公众的健康、安全造成危害的放射性事故时有发生。

To explore the effect of radioactive vascular interventional techniques on reproductive function,clinical observation of a large number of paper medical records and related theories,experiments were reviewed,so that make this technology not only more safe in the treatment of diseases,but also hold the women's reproductive function better.

本文主要通过对量临床观察的病历及相关理论、实验进行综述，探讨介入技术对生育的影响，使其在安全地应用于治疗疾病的同时更好地保留妇女的生育功能。

A specific size, whether the ball is open or closed position, cables are ailable through tool, which is essential to recover radioactive sources is very important.

特定尺寸的球无论处于打开还是关闭位置，电缆均可通过工具，这对放射源必须回收是很重要的。

Whether a particular size of ball is open or closed position, cables are available Butterfly Valves through tools, which must be recovered radioactive sources is very important.

特定尺寸的球无论处于打开还是关闭位置，电缆均可通过工具，这对放射源必须回收是很重要的。

Radioisotope means the nuclide in a certain element with radioactive decay, which has the same ordinal number of atoms but different mass.

放射性同位素，是指某种发生放射性衰变的元素中具有相同原子序数但质量不同的核素。

A radioactive decay series; the paraffin alkane series.

放射性蜕变的系列；链烷烃系列。

But the translocation's speed of radioactive substance in phloem of two kinds of plants were similar.

但在木质部内的转运速度较在韧皮部内快。

The results of experiments showed that the radioactive substance could be translocated in xylem and phloem of two kinds of plants.

花生和大豆的根和叶对甲基异柳磷都有一定的吸收能力。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。