| 摘要 |
An oxygen component of suitable partial pressure for breathing is mixed with an inert component comprising carbon tetrafluoride (CF4), or a mixture of carbon tetrafluoride and helium (He), the inert components having a combined pressure depending upon the pressure of the environment in which breathing is to be sustained. The relative volume percentages of the CF4 and the He are adjusted to optimize certain properties of the breathing mixture to provide improvements over standard compressed air or helium-oxygen mixtures.
|
