| 摘要 |
PCT No. PCT/DE97/00324 Sec. 371 Date May 7, 1999 Sec. 102(e) Date May 7, 1999 PCT Filed Feb. 24, 1997 PCT Pub. No. WO97/30745 PCT Pub. Date Aug. 28, 1997The invention concerns a method of preparing the respiratory air for an oxygen-air mixture wherein extremely pure oxygen gas is added to the air being inhaled. The volumetric amount of oxygen added to the oxygen-air mixture to be prepared depends on the given physical performance to be measured. |
