空氣動力學相對於氣體的物體移動，特別是移動物體與大氣相互作用的動力學
The dynamics of bodies moving relative to gases, especially the interaction of moving objects with the atmosphere.
航天動力學，天體動力學將天然及人工天體推入外層空間的動力學
The dynamics of natural and human-made bodies in outer space.
詹姆斯，詹姆斯·霍普伍德1877－1946英國天文學家、物理學家和數學家。以氣體動力學的研究和探索數學同自然界之間的關係著稱
British astronomer, physicist, and mathematician noted for his work on the kinetic theory of gases and his investigations into the relationships between mathematical concepts and the natural world.
