| 单词 | pitch length |
| 释义 | > as lemmaspitch length pitch length n. Geology the length of an ore-shoot in the direction of greatest dimension. ΘΚΠ the world > movement > impelling or driving > projecting through space or throwing > throw [verb (intransitive)] > so as to fall on a particular place pitch1772 pitch length1906 the world > the earth > minerals > mineral deposits > features of stratum or vein > [noun] > length pitch length1906 1906 W. Lindgren & F. L. Ransome in Professional Papers U.S. Geol. Surv. No. 54. 205 If we assume that the shoot has an elongated, narrow shape, as usually is the case when projected on the plain of the vein, its geometrical relations may be designated as follows: Width or thickness, breadth, stope length, pitch length, and pitch... The pitch length..is the distance between the two extreme ends of the shoot; the pitch is the angle which the pitch length makes with the horizontal. 1965 G. J. Williams Econ. Geol. N.Z. viii. 107/1 The bonanzas have generally a pitch-length exceeding the level-length. < as lemmas |
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