Objective it is to discuss the relationship of locomotory capacity with respiration drive, air way resistance and lactic acid in the patients with chronic obstructive pulmonary disease (COPD).

目的探讨慢性阻塞性肺疾病(COPD)患者运动能力与呼吸驱动、气道阻力和乳酸的关系。

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While measuring the acceleration of gravity on the air cushion slide way, we cant receive an ideal and satisfying result because of the air resistance.

在气垫导轨上测重力加速度时，受空气粘滞阻力的影响，测量结果并不理想。

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