哈斯·金德用复变函数理论讨论了微弯滑行板的非定常运动，获得了计算水动力的一般公式。

Haskind discussed the non-steady motions of small curved planing plate by using the theory of complex functions, and obtained the general expression of hydrodynamic forces.

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徐缓的（地）；行板的（地）：节奏徐缓，通常认为比稍快板慢但比慢板快。主要用作演奏演唱指示。

In a moderately slow tempo, usually considered to be slower than allegretto but faster than adagio. Used chiefly as a direction.

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