Some negligible factors in the classical fluid dynamics, such as, surface force, surface-volume ratio and the effects of gradient parameters, become very important for its study.
由于尺度效应、表面效应等因素的影响，稀薄气体流动表现出自己的特点：流动涉及的表面积与体积之比增强、梯度参数效应，表面效应，流体极性等。
According to the ensemble theory of quantum mechanics, such classical equations describe the motion of fluid.
按照量子力学的系综理论，这样的经典形式的运动方程实际上是流体方程。
Chinese classical architecture prefers building-complex in space arrangement, which mirrors Chinese people's vague, fluid space consciousness and their interest in pursuing spiritual beauty;
中国古典建筑组群式的空间构成方式，比较模糊、变幻的空间思维意识，空间追求旨趣侧重于表现精神美；
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