正文：
随着神舟十八号乘组在轨时间的过半，三名航天员迎来了他们在空间站内的下半程任务。上周，他们不仅对空间站内的设备进行了全面的维护和检测，还开展了多项重要的空间科学实验。
在消防安全方面，航天员对空间站内的烟火检测传感器进行了在轨功能测试。他们利用专业工具，模拟了不同位置的火灾触发条件，确保了传感器能够准确报警。这种定期测试是确保太空环境安全的必要措施，因为任何火灾隐患都可能对航天员的生命安全构成威胁。
在医学研究方面，航天员完成了血液样本的采集工作，这些样本将用于在轨和下行的多项航天医学实验。通过这些实验，科研人员希望能够开发出空间环境健康风险预警的预测模型，研究长期航天飞行中的生理变化，以及失重环境下的骨骼代谢规律。这些研究对于理解太空环境对人体健康的影响至关重要，有助于未来航天员的安全和健康。
此外，航天员还进行了多项医学检查，包括动态心电血压测量和运动肺功能检查，以及其他日常任务。这些活动不仅确保了航天员的健康，也为科学研究提供了宝贵的数据。
神舟十八号乘组在轨工作的顺利进行，展现了我国航天技术的成熟和航天员的专业能力。随着任务的深入，航天员将继续在太空中进行科学实验，为人类探索宇宙作出贡献。
英语如下：
News Title: “Astronauts on Shenzhou-18 Conduct Space Fire Safety Drills”
Keywords: Astronauts, Space Experiment, Equipment Maintenance
News Content:
Title: Astronauts on Shenzhou-18 Conduct Equipment Maintenance, Scientific Experiments in Orbit
Article:
As the crew of Shenzhou-18 approaches the midpoint of their mission in space, the three astronauts have embarked on the second half of their tasks within the space station. Last week, they not only conducted a comprehensive maintenance and inspection of the station’s equipment but also initiated a series of critical space science experiments.
In terms of fire safety, the astronauts conducted in-orbit functional testing of the smoke detectors within the space station. They used specialized tools to simulate various ignition conditions at different locations, ensuring that the sensors could accurately alert of a fire. Such regular testing is a necessary measure to ensure the safety of the space environment, as any potential fire hazards could pose a threat to the astronauts’ lives.
In medical research, the astronauts completed the collection of blood samples, which will be used for a variety of space medicine experiments both in orbit and upon descent. Through these experiments, researchers aim to develop predictive models for health risk warnings in space environments, study physiological changes during long-term space flights, and understand the metabolic rules of bones in a weightless environment. These studies are crucial for understanding the impact of space on human health, helping to ensure the safety and well-being of future astronauts.
Additionally, the astronauts conducted a series of medical checks, including dynamic electrocardiogram and blood pressure measurements and exercise pulmonary function tests, along with other routine tasks. These activities not only ensured the astronauts’ health but also provided valuable data for scientific research.
The smooth progress of Shenzhou-18’s in-orbit work demonstrates the maturity of China’s space technology and the professionalism of the astronauts. As the mission deepens, the astronauts will continue their scientific experiments in space, contributing to humanity’s exploration of the universe.
【来源】http://www.chinanews.com/gn/2024/08-04/10263441.shtml
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