在测试特定的方案以前，NASA必须首先搜集在不同的运行条件下桨叶与空气如何相互作用的数据。
Before specific solutions can be tested, NASA must first collect data on how the rotor blades interact with air under a variety of operating conditions.
产品信息，包括用法，用量，药物相互作用，药物过量，保质期和储存条件的管理指标。
Product information including indication for use, dosage, drug interactions, management of overdose, shelf life and storage conditions.
分析了光辐射与相对论电子相互作用过程中，光辐射被相对论电子放大的条件。
Conditions for amplifying the light radiation by relativistic electrons in the interaction between the light and electrons have been analyzed.
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