van allen radiation belts是什么意思

用法例句

The formulas of transitivity of norms and traces are also two commonly used tools in dealing with a tower of fields, but they do not have to be utilized on all occasions.

范和迹是代数数域扩张中度量其元素的两把基本“尺子”。

The government procurement system in China has formed after it has been developed for ten years.

但政府采购制度建设中也存在不少问题,如政府采购规范范围不明确不确定、政府采购运行机制和管理体制不协调、政府需求规划和预算控制未能发挥应有的作用、政府采购政策功能缺乏具体的实施措施、加入WTO《政府采购协议》面临的问题等。

On the characteristics of precautions against and solutions to medical disputes;

浅谈医疗纠纷的特点及防范处理

Practice and experience of the precautions of risk events in the bloodletting room of outpatient department;

门诊抽血室防范风险事件的做法和体会

The Precaution and Strategy of Operation Room Nursing Safety;

手术室护理安全的防范与对策

Analysis and Prevention About Graphite Blooming of the Nodular Cast Iron;

球墨铸铁石墨开花问题的分析与防范

Electric Static Harm of Light Oil Loading in Railroad Tank and its Prevention Measure;

轻质油品铁路充装作业的静电危害及防范措施

Fatalness of Overloaded LPG Gas Cylinder and its Prevention;

液化石油气钢瓶超量充装危险性及防范