查询词典 sealed radioactive source

A better idea springs from the weak force , which governs certain nuclear processes, including radioactive beta decay. In 1964, physicists found that the weak force is not quite symmetrical in its dealings with matter and antimatter, resulting in something known as CP violation .

比较好的意见是后来突然提出来的称为"弱力"的理论，这种"弱力"控制了某些核过程，其中也包括了放射性的β衰变。1964年，物理学家发现弱力在处理物质和反物质是不完全对称的，此种结果称为宇称不守恒。

"Beta particle:a high-speed electron or positron, especially one emitted in radioactive decay ."

粒子：一种高速电子或质子，主要在放射衰变中释放出。

"Beta particle:a high-speed electron or positron, especially one emit ted in radioactive decay."

粒子：一种高速电子或质子，主要在放射衰变中释放出。

Any of three processes of radioactive disintegration in which a beta particle is spontaneously emitted by an unstable atomic nucleus in order to dissipate excess energy.

某些不稳定原子核为耗散其过剩能量而自发发射一个β粒子的三种放射性衰变过程的统称。

Any of three processes of radioactive disintegration in which a beta particle is spontaneously emit ted by an unstable atomic nucleus in order to dissipate excess energy.

某些不稳定原子核为耗散其过剩能量而自发发射一个β粒子的三种放射性衰变过程的统称。

Article 6 Every unit and individual shall have the right to report to the authorities and bring a charge against any act that causes radioactive pollution.

第六条 任何单位和个人有权对造成放射性污染的行为提出检举和控告。

Yesterday afternoon, the reporters saw this survey report shows : A total of 168 pieces of radioactive sources, namely power plants, the raw material for caesium and cobalt, through its role in the detection of the coal-dust content and factories around the suspended particles.

昨天下午，记者看到了这份调查报告，报告显示：妈湾电厂共有168枚放射源，其原料分别为铯和钴，其作用为检测通过落煤管的灰尘含量和工厂周围的悬浮颗粒。

The company has rich stone resources, limestone is an odorless, non-toxic, non-radioactive, high-quality, ultra-fine green environmentally friendly products, Celestite easy to do all kinds of specifications sheet, the square stone, has been widely used in indoor and outdoor decoration and large paved square.

公司拥有丰富的石材资源，石灰石是一种无味、无毒、无放射、高品质、超精细的绿色环保产品，天青石易做各种规格的板材、广场石，已广泛应用于室内外装饰及大型广场铺设。

A radioactive isotope of cesium used in radiation therapy.

铯的一种放射性同位素，用于放射疗法。

Pitchblende and chalcolite are much more radioactive than uranium itself.

沥清铀矿和铜铀云母比纯铀的放射性强得多。

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。