- polar movement
- 极性移动
English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.
polar movement
Look at other dictionaries:
Polar ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… … Wikipedia
Polar auxin transport — is the regulated transport of the plant hormone, auxin, in plants.It is suggested that it involves the components of the cytoskeleton, plasma membrane, and cell wall. [http://www.plantphys.net/chapter.php?ch=19 Exploring the Cellular Basis of… … Wikipedia
Polar motion — is the movement of Earth s rotation axis across its surface. This is measured with respect to a reference frame in which the solid Earth is fixed (a so called Earth centered, Earth fixed or ECEF reference frame). This variation is only a few… … Wikipedia
Polar cells — Polar Cell are part of a three cell movement involving Hadley Cells and Ferrel Cells which show atmospheric circulation and Surface winds.Cold dense air descends over the Poles which creates high pressure, this cold air moves along the surface to … Wikipedia
polar wandering — noun Movement of the magnetic poles and of the poles of the earth s rotation through geological time • • • Main Entry: ↑polar … Useful english dictionary
polar ecosystem — Introduction complex of living organisms in polar regions such as polar barrens and tundra. Polar barrens and tundra are found at high latitudes on land surfaces not covered by perpetual ice and snow. These areas lying beyond the tree line … Universalium
polar bear — a large white bear, Ursus maritimus, of the arctic regions. [1775 85] * * * White semiaquatic bear (Ursus maritimus) found throughout Arctic regions, generally on drifting oceanic ice floes. A swift, wide ranging traveler and a good swimmer, it… … Universalium
Polar Boy — Superherobox caption = character name = Polar Boy publisher = DC Comics debut = Adventure Comics #306 (March 1963) creators = Edmond Hamilton and John Forte alter ego = Brek Bannin full name = species = Human homeworld = Tharr alliances = Legion… … Wikipedia
Polar ice packs — [ NOAA Projected Arctic changes] Polar ice packs are large areas of pack ice formed from seawater in the Earth s polar regions, known as polar ice caps: the Arctic ice pack (or Arctic ice cap) of the Arctic Ocean and the Antarctic ice pack of the … Wikipedia
Polar-amino-acid-transporting ATPase — In enzymology, a polar amino acid transporting ATPase (EC number|3.6.3.21) is an enzyme that catalyzes the chemical reaction:ATP + H2O + polar amino acidout ightleftharpoons ADP + phosphate + polar amino acidinThe 3 substrates of this enzyme are… … Wikipedia
polar wandering — Migration of the magnetic poles of the Earth through geologic time. Scientific evidence indicates that the magnetic poles have slowly and erratically wandered across the surface of the Earth. Pole locations calculated from measurements on rocks… … Universalium
