expiration time

 
  • 呼氣時(shí)間

expiration time的用法和樣例:

例句

  1. The results showed that the removal rate of formaldehyde by activated sludge increased with aerating time.
    結果表明,隨著(zhù)曝氣時(shí)間的延長(cháng),活性污泥對甲醛的去除率增大。
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