“capillary”的概念、定义、翻译、参考文献-科学参考

capillary

Physics

A tube of small diameter, such as the narrowest type of blood vessel in the vertebrate circulatory system.

Chemistry

A tube of small diameter.

Chemical Engineering

A tube that has a very small internal diameter. In a vertical glass capillary, the elevation of a liquid is due to surface tension forces. In a porous body, moisture held within capillaries is removed by evaporation at the surface and therefore limits the rate of drying. The rate of evaporation is therefore controlled by the movement of moisture to the surface from within the capillaries, which is dependent on surface tension, pore size, and the density of the liquid.

Biology

The narrowest type of blood vessel in the vertebrate circulatory system. Capillaries conduct blood from arterioles to all living cells: their walls consist of a single layer of endothelial cells, so that oxygen and nutrients can pass through them into the surrounding tissues. Capillaries also transport waste material (e.g. urea and carbon dioxide) to venules for ultimate excretion. Capillaries can be constricted or dilated, according to local tissue requirements. See microcirculation.

Geography

In a soil, the fine spaces between soil particles. Capillary action is the movement of a liquid in a very narrow space, such as a soil pore, due to surface tension, cohesion, and adhesion. See N. Brady and R. Wei (1998).

单词	capillary
释义	capillary Physics A tube of small diameter, such as the narrowest type of blood vessel in the vertebrate circulatory system. Chemistry A tube of small diameter. Chemical Engineering A tube that has a very small internal diameter. In a vertical glass capillary, the elevation of a liquid is due to surface tension forces. In a porous body, moisture held within capillaries is removed by evaporation at the surface and therefore limits the rate of drying. The rate of evaporation is therefore controlled by the movement of moisture to the surface from within the capillaries, which is dependent on surface tension, pore size, and the density of the liquid. Biology The narrowest type of blood vessel in the vertebrate circulatory system. Capillaries conduct blood from arterioles to all living cells: their walls consist of a single layer of endothelial cells, so that oxygen and nutrients can pass through them into the surrounding tissues. Capillaries also transport waste material (e.g. urea and carbon dioxide) to venules for ultimate excretion. Capillaries can be constricted or dilated, according to local tissue requirements. See microcirculation. Geography In a soil, the fine spaces between soil particles. Capillary action is the movement of a liquid in a very narrow space, such as a soil pore, due to surface tension, cohesion, and adhesion. See N. Brady and R. Wei (1998).
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