“entrainment”的概念、定义、翻译、参考文献-科学参考

entrainment

Astronomy

A phenomenon in which the medium through which a jet propagates is drawn into the jet itself. One example is the presence of neutrons in the solar wind. Since the neutrons cannot have been accelerated by the processes thought to produce the proton and electron components of the solar wind, they must have been entrained into the cosmic rays from the outer layers of the Sun. Jets from radio galaxies may also contain material entrained from the galaxy.

Chemical Engineering

The capture of bubbles, drops, or particles from one phase to another from which it is being separated.

Biology

The synchronization of an inherent biological rhythm in an organism with an external cycle of events, such as the daily day-night cycle, the ebbing and flowing of tides, or the seasons. See biological clock.

Geology and Earth Sciences

Process by which air from the environment outside a growing cloud is caught into the rising convective current within the cloud and mixed with the cloudy air. This is significant in that it reduces the buoyancy of the rising current and causes cloud growth by reason of the cooler, drier air which is introduced. This also causes some evaporation of cloud droplets. When very dry air is introduced, entrainment can produce rapid dissipation of the cloud.

Geography

1 The picking up and setting into motion of particles, either by wind, water, or ice. The main entrainment forces are provided by impact, lift force, and turbulence. Resistance to entrainment is provided by packing and by the submerged weight of the particle.
2 In meteorology, the incorporation of buoyant air into a cloud; see Moeng (2000) J. Atmos. Scis 57, 21.

单词	entrainment
释义	entrainment Astronomy A phenomenon in which the medium through which a jet propagates is drawn into the jet itself. One example is the presence of neutrons in the solar wind. Since the neutrons cannot have been accelerated by the processes thought to produce the proton and electron components of the solar wind, they must have been entrained into the cosmic rays from the outer layers of the Sun. Jets from radio galaxies may also contain material entrained from the galaxy. Chemical Engineering The capture of bubbles, drops, or particles from one phase to another from which it is being separated. Biology The synchronization of an inherent biological rhythm in an organism with an external cycle of events, such as the daily day-night cycle, the ebbing and flowing of tides, or the seasons. See biological clock. Geology and Earth Sciences Process by which air from the environment outside a growing cloud is caught into the rising convective current within the cloud and mixed with the cloudy air. This is significant in that it reduces the buoyancy of the rising current and causes cloud growth by reason of the cooler, drier air which is introduced. This also causes some evaporation of cloud droplets. When very dry air is introduced, entrainment can produce rapid dissipation of the cloud. Geography 1 The picking up and setting into motion of particles, either by wind, water, or ice. The main entrainment forces are provided by impact, lift force, and turbulence. Resistance to entrainment is provided by packing and by the submerged weight of the particle. 2 In meteorology, the incorporation of buoyant air into a cloud; see Moeng (2000) J. Atmos. Scis 57, 21.
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