mặt thoáng
Definition
- Noun:
- Free surface: The exposed, upper boundary of a liquid that is in contact with a gas (usually air) and not confined by a solid container from above. It is the surface where the liquid is free to move and interact with the atmosphere.
Usage Examples
- Noun:
- Gió thổi làm gợn sóng trên mặt thoáng của hồ. (The wind blew, creating ripples on the free surface of the lake.)
- Áp suất tại mặt thoáng bằng áp suất khí quyển. (The pressure at the free surface equals atmospheric pressure.)
- Khi đổ nước vào bình, mặt thoáng sẽ nằm ngang. (When pouring water into a container, the free surface will be horizontal.)
Advanced Usage
- This term is primarily technical and is commonly used in fields such as fluid mechanics, hydrology, and civil engineering.
- Các tính toán thủy lực phải xét đến sự dao động của mặt thoáng. (Hydraulic calculations must consider fluctuations of the free surface.)
Variants and Related Words
- Mặt nước (n): Water surface. This is a more general, everyday term for the surface of a body of water, which is typically a "mặt thoáng."
- Ánh trăng phản chiếu trên mặt nước. (The moonlight reflects on the water surface.)
Synonyms
- Free surface (technical).
- Liquid surface (general).
Related Concepts
- Mực nước (n): Water level. This refers to the height or elevation of the "mặt thoáng."
- Mực nước sông đang dâng cao. (The river's water level is rising.)