| 单词 | mineral caoutchouc |
| 释义 | > as lemmasmineral caoutchouc 2. artificial caoutchouc: a substance formed by adding to a solution of glue tungstic acid or sodium tungstate, and then hydrochloric acid; it is elastic when warm. mineral caoutchouc: = elaterite n. a hydrocarbon found at Castleton in Derbyshire, and elsewhere. vulcanized caoutchouc: caoutchouc kneaded with flowers of sulphur, with which it unites and becomes black and horny: see vulcanite n. ΚΠ 1863 H. Watts Dict. Chem. I. 739 Sulphured or vulcanised caoutchouc is an excellent material for tubes for conveying water or gases. mineral caoutchouc ΚΠ 1801 Encycl. Brit. Suppl. II. 230/2 Mineral caoutchouc. 1856 Sci. Amer. 25 Oct. 53/2 ‘Elastic bitumen’ is of a brown color, and erases pencil marks like india rubber, hence it is called mineral caoutchouc. 1875 Appletons' Jrnl. 3 July 2/2 This crude, impure variety of bitumen, first discovered on the shores of the naphtha-lakes of the East, is now known as mineral caoutchouc. 1896 Science 5 June 832/1 The nearest neighbor [to Uintaite] is the Mineral Caoutchouc, Elaterite, or Wurtzilite. < as lemmas |
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