英语词汇“rotation curve”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

rotation curve

Astronomy

noun

A graph of the orbital speed of stars, gas clouds, etc., in a galaxy plotted against their distance from the galactic centre.

The rotation curve of a typical spiral galaxy, outside the central bulge, is flat, the orbital speed remaining approximately constant with distance rather than decreasing with distance as predicted by Kepler's third law; the existence of dark matter has been postulated to account for this discrepancy..

1960s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.

单词	rotation curve
释义	rotation curve Astronomy noun A graph of the orbital speed of stars, gas clouds, etc., in a galaxy plotted against their distance from the galactic centre. The rotation curve of a typical spiral galaxy, outside the central bulge, is flat, the orbital speed remaining approximately constant with distance rather than decreasing with distance as predicted by Kepler's third law; the existence of dark matter has been postulated to account for this discrepancy.. Origin 1960s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.
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