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

protopyramid n.

Brit.

/ˌprəʊtə(ʊ)ˈpɪrəmɪd/

U.S.

/ˌproʊdoʊˈpɪrəˌmɪd/

Crystallography the primitive pyramid of a crystal system, in which the horizontal axes of the system intersect the edges of the pyramid (as opposed to one in which the axes intersect the faces midway between the edges).

ΚΠ

1890 Cent. Dict. at Pyramid In the tetragonal system a unit pyramid is also called a protopyramid.

1895 N. Story-Maskelyne Crystallogr. 291 The trigonal proto-pyramid may be regarded..as being a limiting case of the ditrigonal proto-pyramid.

2006 metafysica.nl 28 June (O.E.D. Archive) The next Figure depicts the hexagon relating to the Protopyramid (1), and that relating to the Deuteropyramid (3).

单词	protopyramid
释义	> as lemmas protopyramid protopyramid n. Brit. /ˌprəʊtə(ʊ)ˈpɪrəmɪd/ , U.S. /ˌproʊdoʊˈpɪrəˌmɪd/ Crystallography the primitive pyramid of a crystal system, in which the horizontal axes of the system intersect the edges of the pyramid (as opposed to one in which the axes intersect the faces midway between the edges). ΚΠ 1890 Cent. Dict. at Pyramid In the tetragonal system a unit pyramid is also called a protopyramid. 1895 N. Story-Maskelyne Crystallogr. 291 The trigonal proto-pyramid may be regarded..as being a limiting case of the ditrigonal proto-pyramid. 2006 metafysica.nl 28 June (O.E.D. Archive) The next Figure depicts the hexagon relating to the Protopyramid (1), and that relating to the Deuteropyramid (3). extracted from proto-comb. form < as lemmas
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