名词

1. (经济的)部门，行业，领域
A particular sector of a country's economy is the part connected with that specified type of industry.

2. (大型组织的)部分,小群体
A sector of a large group is a smaller group which is part of it.

3. 军事管制区;军事防御区
A sector is an area of a city or country which is controlled by a military force.

4. 扇形
A sector is a part of a circle which is formed when you draw two straight lines from the centre of the circle to the edge.

1. measuring instrument consisting of two graduated arms hinged at one end

2. a particular aspect of life or activity

e.g. he was helpless in an important sector of his life

Synonym: sphere

3. a social group that forms part of the society or the economy

e.g. the public sector

4. a portion of a military position

5. the minimum track length that can be assigned to store information
unless otherwise specified a sector of data consists of 512 bytes

6. a plane figure bounded by two radii and the included arc of a circle