Only after several inadequate breaths under such conditions, resulting in the considerable elevation of carbon dioxide and reduction of oxygen in the blood, is breathing effort adjusted.
在这种情况下，只有在几次呼吸不足出现，导致血液中二氧化碳大量增加和氧气减少后，呼吸的力度才得到调整。
The elevation type flat car has the advantages that the structure is reasonable, the height can be adjusted as needed, therefore the use is convenient.
本实用新型结构合理，高度可根据需要进 行调节，使用方便。
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