radioactive isotope

简明释义

放射性同位素

英英释义

例句

1.Nuclear power plants often use radioactive isotopes 放射性同位素 for generating energy.

核电站通常使用放射性同位素 radioactive isotopes 来产生能量。

2.The medical team used a radioactive isotope 放射性同位素 to conduct a PET scan for detecting tumors.

医疗团队使用了一个放射性同位素 radioactive isotope 来进行PET扫描以检测肿瘤。

3.In geology, scientists often date rocks using a radioactive isotope 放射性同位素 of uranium.

在地质学中，科学家经常使用铀的放射性同位素 radioactive isotope 来对岩石进行测年。

4.The radioactive isotope 放射性同位素 iodine-131 is commonly used in the treatment of thyroid cancer.

碘-131这种放射性同位素 radioactive isotope 通常用于治疗甲状腺癌。

5.Researchers are studying the effects of a specific radioactive isotope 放射性同位素 on the environment.

研究人员正在研究特定放射性同位素 radioactive isotope 对环境的影响。

作文

Radioactive isotopes, also known as radioisotopes, are variants of chemical elements that have unstable nuclei and emit radiation as they decay. These isotopes can be found in nature or produced artificially in laboratories. The process of radioactive decay can lead to the transformation of one element into another, which is a fascinating aspect of nuclear chemistry. Understanding the properties and applications of radioactive isotope (放射性同位素) is essential in various fields, including medicine, archaeology, and energy production.In medicine, radioactive isotopes (放射性同位素) are used extensively for diagnostic imaging and treatment. For example, technetium-99m is a widely used radioisotope in nuclear medicine for imaging organs such as the heart and brain. This isotope emits gamma rays, which can be detected by special cameras, allowing doctors to visualize internal structures and diagnose conditions. Additionally, certain radioactive isotopes (放射性同位素) are utilized in cancer treatment. For instance, iodine-131 is used to treat thyroid cancer by targeting and destroying malignant cells while minimizing damage to surrounding healthy tissue.Another significant application of radioactive isotopes (放射性同位素) is in archaeology, particularly in carbon dating. Carbon-14, a naturally occurring radioisotope, is used to determine the age of organic materials up to about 50,000 years old. By measuring the amount of carbon-14 remaining in a sample, scientists can estimate when the organism died. This technique has revolutionized our understanding of ancient civilizations and has provided invaluable insights into human history.In the realm of energy production, radioactive isotopes (放射性同位素) play a crucial role in nuclear power generation. Uranium-235 and plutonium-239 are two isotopes commonly used as fuel in nuclear reactors. When these isotopes undergo fission, they release a tremendous amount of energy, which is harnessed to generate electricity. While nuclear power is a potent source of energy with low greenhouse gas emissions, it also raises concerns regarding safety and radioactive waste management. The handling and disposal of spent radioactive isotopes (放射性同位素) require stringent regulations and advanced technology to ensure environmental protection and public safety.Despite their benefits, the use of radioactive isotopes (放射性同位素) also poses risks. Exposure to high levels of radiation can lead to serious health issues, including cancer. Therefore, it is essential to implement safety measures when working with these materials. Researchers and medical professionals must adhere to strict protocols to minimize exposure and ensure the safe handling of radioactive isotopes (放射性同位素).In conclusion, radioactive isotopes (放射性同位素) are remarkable substances with diverse applications across various fields. From medical diagnostics and treatments to archaeological dating and energy production, their importance cannot be overstated. However, with their potential benefits come inherent risks, necessitating careful management and regulation. As science continues to advance, the study and application of radioactive isotopes (放射性同位素) will likely evolve, leading to new discoveries and innovations that can further benefit society while addressing the challenges they present.