This is the 7571st most frequent Chinese word.
負氣壓
Negative air pressure.
The term "負氣壓" (negative air pressure) describes the mechanism by which the vacuum cleaner operates by creating a pressure difference.
這台真空吸塵器是利用負氣壓來清除地毯上的灰塵。
This vacuum cleaner uses negative air pressure to remove dust from the carpet.
Here, "負氣壓" refers to an engineered atmospheric setting within the water supply system to ensure its proper functioning.
負氣壓的設定很重要，以避免水管內的氣泡影響正常供水。
The setting of negative air pressure is essential to prevent bubbles in pipes from affecting normal water supply.
In this case, "負氣壓" is used to describe a controlled pressure environment that aids containment.