A new method for adjusting the horizontality of an air-cushion-track is discussed in this paper an experimental scheme of measuring the resistant coefficient is proposed.
讨论了判定气垫导轨是否水平的较精确的新方法，提出了测量气流阻力系数的一个实验方案。
The invention relates to a making method of adjusting the elasticity coefficient of the hitting surface of a golf rod head.
本发明涉及一种调整高尔夫杆头击球面弹性系数的制法。
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