It is discovered that the natural convection gas has the pendulum characteristic, so the new concept of gas pendulum is presented.
根据自然对流气体具有摆的特性，从而提出气体摆新概念。
The pendulum characteristic of nature convection gas in dimensional enclosure is analyzed by finite element method (FEM).
论述了采用有限元法分析密闭腔中自然对流气体的摆特性。
It is discovered that the natural convection gas has the pendulum characteristic.
发现了密闭腔中自然对流气体有摆现象。
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