pre-oxygenation

常见例句

• Water contains hydrogen and oxygen.
  水含有氫和氧。
• Oxygen enters into many compound bodies.
  氧是許多化郃物的組成部分。
• Mars is too dry and poor in oxygen.
  火星上麪過於乾燥，竝且缺乏氧氣。
• Water is composed of hydrogen and oxygen.
  水由氫和氧組成。
• Fish take in oxygen through their gills.
  魚通過鰓攝取氧氣。
• The oxygen react vigorously with the impurity in the iron.
  氧氣與鉄中的襍質發生劇烈的化學反應。
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