英语词汇“oxygen concentrators”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	oxygen concentrators
释义	oxygen concentrators oxygen concentrators Portable devices containing molecular sieves of silica and alumina through which air is forced. The sieves selectively adsorb nitrogen and carbon dioxide from the air to give an output of 95% of medically acceptable oxygen and 5% of the inert gas argon. These concentrators deliver oxygen to patients in their own homes at a small fraction of the cost of oxygen in cylinders.
随便看	section 31 fee section 423 section 482 section 501(c)(3) organization section 501(c)3 organization section 501c3 organization section 501(c)(3) organizations section 501(c)3 organizations section 501c3 organizations section 501(c)(4) section 501(c)4 section 501c4 section 501(c)(5) section 501(c)5 section 501c5 section 501(c)(6) section 501(c)6 section 501c6 section 504 of the rehabilitation act of 1973 section 504 of the u.s. rehabilitation act section 504 of the us rehabilitation act section 508 of the rehabilitation act of 1973 section 521 section 527 section 529 plan

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