空气动力学相对于气体的物体移动，特别是移动物体与大气相互作用的动力学
The dynamics of bodies moving relative to gases, especially the interaction of moving objects with the atmosphere.
航天动力学，天体动力学将天然及人工天体推入外层空间的动力学
The dynamics of natural and human-made bodies in outer space.
詹姆斯，詹姆斯·霍普伍德1877－1946英国天文学家、物理学家和数学家。以气体动力学的研究和探索数学同自然界之间的关系著称
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.
