With certain shapes of or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top.
根据口和导不,可以造细盖以覆盖导和螺纹部分,并在顶部封住导。
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Staying in the 90s on the nasal canula.
血氧浓? - 90%, 给他吸氧。
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