人与数据库交互：他们引导数据流的走向；他们解释并处理数据请求。
People interact with databases: they direct data flows; they interpret and service data requests.
提出了一种数值模拟振动的理想平板绕流场，并提取其气动导数的方法。
Numerical simulation of the flow field around the oscillating ideal flat plate is presented to assess the aerodynamic derivatives.
本文指出前苏联学者布洛欣采夫由几率流密度的连续性论证波函数及其一阶导数的连续性中有不妥之处。
The paper will point out that there was a fault in deducing the continuity of probability current density through the continuity of wave function and first order devirative by a scholar of Soviet.
尾旋特性分析及预测时所使用的动导数通常是在常规流场中获得的，测得的动导数没有体现旋转流场的影响。
The dynamic stability derivatives which are used for analysis and prediction the characters of spin are acquired in routine flow field usually, which has no effect of rotation.
尾旋特性分析及预测时所使用的动导数通常是在常规流场中获得的，测得的动导数没有体现旋转流场的影响。
The dynamic stability derivatives which are used for analysis and prediction the characters of spin are acquired in routine flow field usually, which has no effect of rotation.
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