radioactive rays

简明释义

放射线

英英释义

例句

1.The scientist measured the intensity of the radioactive rays 放射性射线 emitted from the sample.

科学家测量了样本中发出的放射性射线的强度。

2.Geiger counters are used to detect radioactive rays 放射性射线 in the environment.

盖革计数器用于检测环境中的放射性射线。

3.The safety protocols were updated to limit exposure to radioactive rays 放射性射线 in the laboratory.

安全协议已更新，以限制实验室中对放射性射线的暴露。

4.Workers in nuclear power plants must wear protective gear to shield against radioactive rays 放射性射线.

核电厂的工人必须穿戴防护装备，以防护放射性射线。

5.Exposure to high levels of radioactive rays 放射性射线 can lead to serious health issues.

暴露于高水平的放射性射线可能导致严重的健康问题。

作文

Radioactive materials are substances that emit radiation in the form of particles or electromagnetic waves. Among these emissions, radioactive rays (放射性射线) are particularly significant due to their potential effects on health and the environment. Understanding radioactive rays is essential for anyone studying nuclear physics, radiology, or environmental science.The term radioactive rays refers to the energy released during the decay of radioactive isotopes. There are three main types of radioactive rays: alpha particles, beta particles, and gamma rays. Each type has distinct characteristics and interactions with matter. Alpha particles are relatively heavy and can be stopped by a sheet of paper. Beta particles, which are lighter, can penetrate through paper but are stopped by a few millimeters of plastic or glass. Gamma rays, on the other hand, are highly penetrating electromagnetic waves that require dense materials like lead or several centimeters of concrete for effective shielding.The study of radioactive rays is crucial in various fields, including medicine. In medical applications, radioactive rays are used in diagnostic imaging and treatment. For example, in cancer therapy, certain radioactive isotopes are employed to target and destroy malignant cells. This process, known as radiotherapy, relies on the ability of radioactive rays to damage the DNA of cancerous cells, leading to their death or inhibition of growth.However, exposure to radioactive rays can also pose serious health risks. Prolonged or high-level exposure can result in radiation sickness, genetic mutations, and an increased risk of cancer. This is why safety measures are paramount when working with radioactive materials. Professionals handling such materials must adhere to strict guidelines to minimize exposure, including using protective gear and monitoring radiation levels in their environment.In addition to health concerns, radioactive rays also have implications for environmental safety. The disposal of radioactive waste is a critical issue, as improper handling can lead to contamination of soil and water sources. This contamination can have long-lasting effects on ecosystems and human populations. Therefore, understanding radioactive rays is not only important for individual safety but also for public health and environmental protection.Research into radioactive rays continues to evolve, with scientists seeking to harness their properties for beneficial uses while mitigating risks. Innovations in detection technology, for instance, allow for better monitoring of radiation levels in various settings, from hospitals to nuclear power plants. Furthermore, advancements in treatment methods aim to improve the efficacy of radioactive rays in medical applications while reducing side effects for patients.In conclusion, radioactive rays (放射性射线) play a dual role in science and society. On one hand, they offer valuable applications in medicine and industry; on the other hand, they present significant challenges regarding safety and environmental impact. A comprehensive understanding of radioactive rays is essential for harnessing their benefits while protecting human health and the planet.