返回

科学素养与生活应用·英语30篇(9)

20 / 30
已读 0 / 30 课
Why Some Toilets Refill Quietly After Flushing

Why Some Toilets Refill Quietly After Flushing

为什么有些马桶冲水后会安静地自动补水

  1. Old toilets often make loud hissing or gurgling sounds.
  2. New ones use special valves that control water flow gently.
  3. These valves open and close smoothly to avoid air bubbles and noise.
  4. Water pressure pushes fresh water into the tank without splashing.
  5. Quiet refill saves water and makes bathrooms more peaceful.
  6. It’s science helping us live comfortably every day.
上一页
/ 30
下一页