| 单词 | India rubber |
| 释义 | India rubber (once / 21888 pages) n India rubber is one name for the natural rubber that comes from the sap of certain trees. Rubber trees that grow in South America and India produce the majority of India rubber. India rubber can also be called "natural rubber," "gum rubber," or "caoutchouc," its original name. This material was first brought to the West by 18th century explorers of the Indies, who loaned the word India to the gummy substance, which was eventually dubbed rubber because of its ability to rub out pencil marks on paper. India rubber was grown commercially on plantations in South Asia by the end of the 1800s. WORD FAMILYIndia rubber: India rubbers USAGE EXAMPLESDeveloped in the 1840s by American brothers Charles and Nelson Goodyear, it's a compound made from India rubber. BBC(Jun 15, 2015) The valves are of India rubber; the discharge valve is a ring, one for each end of the pump, as shown at b, Fig. 3391a. Rose, Joshua, Modern Machine-Shop Practice, Volum...(2012) It came bouncing back, I do declare, as if it had been India rubber. MacKenzie, Compton, Poor Relations(2012) n an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products Syn|Hypo|Hyper caoutchouc, gum elastic, natural rubber, rubber foam rubber spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery crepe rubbercrude natural rubber; used mainly for shoe soles cold rubbera rubber made at low temperatures (5 degrees Centigrade) which is tougher than conventional rubber and is often used in car tires ebonite, hard rubber, vulcanitea hard nonresilient rubber formed by vulcanizing natural rubber Para rubbera type of natural rubber obtained from tropical South American trees latex a milky exudate from certain plants that coagulates on exposure to air |
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