半径变小，不是P增大吗？
发布于 2020-02-06 · 浏览 959 · IP 江苏江苏
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The LaPlace law, P = 2T/ R, states that the pressure within an elastic sphere is directly proportional to the tension of the wall and inversely proportional to the radius of the curvature. In this case, the sphere is the alveolus. Alveoli are lined with a film of surfactant that lends stability to the alveoli by decreasing the surface tension as the radius of the alveolus becomes smaller.Without this ability to vary surface tension, small alveoli, which have a smaller radius of curvature and thus a higher pressure, would empty into large alveoli and alveolar stability would be lost.
decreasing the surface tension as the radius of the alveolus becomes smaller.半径变小，不是P增大吗？怎么说表面张力减少 P = 2T/ R
最后编辑于 2022-10-09 · 浏览 959
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