n.

a self-contained part of a larger composition (written or musical)

"he always turns first to the business section"; "the history of this work is discussed in the next section"

同義詞：subdivision

a very thin slice (of tissue or mineral or other substance) for examination under a microscope

"sections from the left ventricle showed diseased tissue"

a distinct region or subdivision of a territorial or political area or community or group of people

"no section of the nation is more ardent than the South"; "there are three synagogues in the Jewish section"

one of several parts or pieces that fit with others to constitute a whole object

"a section of a fishing rod"; "metal sections were used below ground"

同義詞：segment

a small team of policemen working as part of a police platoon

one of the portions into which something is regarded as divided and which together constitute a whole

"the finance section of the company"

同義詞：partdivision

a land unit of 1 square mile measuring 1 mile on a side

(geometry) the area created by a plane cutting through a solid

同義詞：plane section

a division of an orchestra containing all instruments of the same class

a small army unit usually having a special function

a specialized division of a large organization

"she got a job in the historical section of the Treasury"

同義詞：department

a segment of a citrus fruit

"he ate a section of the orange"

the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)

同義詞：incisionsurgical incision

Theory of Wing Sections
Panel data from time series of cross-sections
Estimation of surface area from vertical sections.
Interstellar photoelectric absorption cross sections, 0.03-10 keV
Total Cross Sections for Ionization and Attachment in Gases by Electron Impact. I. Positive Ionization
Hartree-Slater subshell photoionization cross-sections at 1254 and 1487 eV
Parameterization of polylines in unorganized cross-sections and open surface reconstruction
Design of organic molecules with large two-photon absorption cross sections.
Picrosirius staining plus polarization microscopy, a specific method for collagen detection in tissue sections.
Characterization and localization of cannabinoid receptors in brain: an in vitro technique using slide-mounted tissue sections.