Meaning
地核 refers to the innermost layer of the Earth, composed primarily of iron and nickel. It is divided into the outer core (liquid) and inner core (solid), and is responsible for Earth's magnetic field. This is a scientific/geological term used in academic contexts.
Usage
This is a formal, technical term used primarily in geology, earth science, and educational contexts. It appears in textbooks, scientific articles, and documentaries about planetary structure. Native speakers would not use this in everyday conversation unless discussing science or geology.
Examples
- 01地核的温度可以达到6000摄氏度以上。.The temperature of the Earth's core can reach over 6000 degrees Celsius.
- 02科学家通过研究地震波来了解地核的结构。.Scientists study the structure of the Earth's core by researching seismic waves.
Characters
Measure words
- 个一个地核
Common collocations
- 地核温度temperature of Earth's core
- 外地核outer core
- 内地核inner core
Antonyms
Origin
The term combines 地 (earth) with 核 (core/nucleus), following the pattern of modern Chinese scientific terminology. The character 核 originally meant the pit or stone of a fruit, which was extended to mean the core or nucleus of anything.