For most effective play, the club should have a firm shaft. Course owners are permitted to check shaft stiffness before play begins.
为是打球更有效，球杆应该有一个坚固的轴。在开始比赛前，应当允许球道主人检查轴的紧固性。
Check for surface contact area (metallic contact) between stern shaft and propeller hub tapers.
检查螺旋桨轴与螺旋桨锥度接触面。
Check the convoluted air bellows on the front cardan shaft for damage.
检查前万向节轴上的回旋式风箱是否损坏。
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