khí kém
Definition
- Noun:
- Low-pressure gas / Rarefied gas: A gas that exists at a very low pressure, significantly below atmospheric pressure. Its density is much lower than that of air under normal conditions.
Usage Examples
- Noun:
- Các nhà khoa học nghiên cứu tính chất của khí kém trong chân không. (Scientists study the properties of rarefied gas in a vacuum.)
- Bóng đèn sợi đốt chứa đầy khí kém để bảo vệ dây tóc. (An incandescent light bulb is filled with low-pressure gas to protect the filament.)
Advanced Usage
- This term is primarily used in scientific and technical contexts, such as physics, engineering, and manufacturing (e.g., in vacuum tubes, certain types of lighting, and space simulation chambers).
Variants and Related Words
- Chân không: vacuum (a space entirely devoid of matter, often containing traces of ).
- Khí loãng: rarefied gas (a more general term for gas at low density).
Synonyms
- Rarefied gas
- Low-density gas
- Low-pressure gas