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

polycrase

/ˈpɒlɪkreɪz/ /ˈpɒlɪkreɪs/

Mineralogy

noun

A mineral (belonging to the orthorhombic crystal system but usually metamict) that consists of an oxide of titanium, niobium, tantalum, uranium, yttrium, and other elements, and occurs as short, prismatic, black crystals.

In 1988 (Mineral. Mag. 52 292/2) the official name was altered to polycrase-(Y)..

Origin

Mid 19th century; earliest use found in American Journal of Science. From German Polykras from ancient Greek πολυ- + κρᾶσις mixture, so called on account of its many constituents.

单词	polycrase
释义	polycrase /ˈpɒlɪkreɪz/ /ˈpɒlɪkreɪs/ Mineralogy noun A mineral (belonging to the orthorhombic crystal system but usually metamict) that consists of an oxide of titanium, niobium, tantalum, uranium, yttrium, and other elements, and occurs as short, prismatic, black crystals. In 1988 (Mineral. Mag. 52 292/2) the official name was altered to polycrase-(Y).. Origin Mid 19th century; earliest use found in American Journal of Science. From German Polykras from ancient Greek πολυ- + κρᾶσις mixture, so called on account of its many constituents.
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