| 释义 |
vitrain|ˈvɪtreɪn|
[f. L. vitr-eus vitreous a. + -ain in fusain (sense 2).]
A black, highly lustrous, and often brittle type of coal.
1919, etc. [see clarain]. 1930[see durain]. 1975D. G. Murchison et al. tr. E. Stach's Textbk. Coal Petrol. v. 334 The first step..is the crushing of the run-of-mine coal... When a seam contains thick layers of bright coal, the soft and mostly brittle vitrain concentrates in the smalls, below 10 mm. |