单词 | race |
释义 | race [rās] ANTHROPOLOGY 1. A distinctive human type possessing characteristic traits that are transmissible by descent. 2. Descendants of a common ancestor. BIOLOGY 1. An infraspecific taxonomic group of organisms, such as subspecies or microspecies. 2. A fixed variety or breed. DESIGN ENGINEERING Either of the concentric pair of steel rings of a ball bearing or roller bearing. ENGINEERING A channel transporting water to or away from hydraulic machinery, as in a power house. OCEANOGRAPHY A rapid current, or a constricted channel in which such a current flows; the term is usually used only in connection with a tidal current, which may be called a tide race. |
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