capillary tube
Refers to a very thin tube, often used in scientific or technical contexts such as physics, chemistry, or engineering.
Water rises in a thin tube due to capillary action.
Anatomical term for the smallest blood vessels. Often used as an abbreviation of 毛細血管 in medical or biological contexts.
See also: 毛細血管
Capillaries are thin blood vessels that connect arteries and veins.