1 is the abbreviation of contract for difference, which means contract for difference. A contract for difference can reflect the price change of a stock or index, and provide the profit or loss caused by the price change, without actually owning the stock or index futures.

2. It is the abbreviation of computational fluid dynamics, that is, computational fluid dynamics. Computational fluid dynamics (CFD) is a branch of fluid mechanics. CFD is the product of the combination of modern fluid mechanics, numerical mathematics and computer science, and it is an interdisciplinary subject with strong vitality.

3. It is the abbreviation of China Floorball Development, which means China Dryland Ice Hockey Development Center. Dry land ice hockey center was established on 20 13.

4. it is the abbreviation of Central Food Depot, which means central kitchen. The central kitchen is a centralized feeding center, and the format is "6- 12" cooked food convenience store.

Extended data:

1933, Thom, England, used a hand-cranked computer to numerically solve the two-dimensional viscous fluid partial differential equation for the first time, and CFD (computational fluid dynamics) came into being.

In the following 20 years, the research and application of CFD (computational fluid dynamics) technology in HVAC engineering is in full swing.

Baidu Encyclopedia -—CFD (Computational Fluid Dynamics)

Baidu Encyclopedia -—CFD (Contract for Difference)

Baidu Encyclopedia -—CFD (Central Kitchen)

Baidu Encyclopedia -—CFD (China Dryland Ice Hockey Development Center)