n.锝

Technetium-99m is a widely used radioisotope in medical imaging, known for its short half-life."
technetium-99m 是一种常用于医学成像的放射性同位素，因其半衰期短而知名。
The discovery of technetium marked a significant breakthrough in nuclear chemistry."
technetium 的发现对核化学是一个重大的突破。
Technetium-149 has unique properties that make it useful in materials science research."
technetium-149 具有独特的性质，使其在材料科学研究中大有用途。
Technetium is often found in trace amounts in natural ores, making it difficult to isolate."
technetium 在自然界中的含量极低，很难大量分离。
The synthesis of technetium-201 involves complex nuclear reactions."
technetium-201 的合成涉及复杂的核反应过程。
Technetium's high melting point makes it useful in high-temperature applications."
technetium 的高熔点使其适用于高温环境。
Technetium-99m emits gamma rays, which are detected by gamma cameras during medical procedures."
technetium-99m 发射伽马射线，医疗手术中通过伽马相机检测。
Technetium-99m can be produced through neutron activation, a common technique in nuclear medicine."
technetium-99m 通过中子活化可以制备，这是核医学中的常见方法。
Technetium's instability and radioactivity require careful handling and storage."
technetium 的不稳定性和放射性需要小心处理和储存。
The study of technetium's behavior under different conditions is crucial for understanding nuclear transmutations.
研究 technetium 在不同条件下的行为对于理解核转变至关重要。