| 单词 |
pykrete |
| 释义 |
pykrete|ˈpaɪkriːt|
Also Pykrete.
[f. the name of G. N. Pyke (1894–1948), an Englishman involved in Combined Operations (where pykrete was invented) during the war of 1939–45 + concrete a. and n.]
A frozen mixture of ice and wood pulp or sawdust.
1948Jrnl. Glaciol. I. 96 In February 1943 the..outlook was suddenly transformed by the discovery that the inclusion of a small percentage of wood pulp improved the mechanical properties of ice in a spectacular manner. The discovery was made by Mark and Hohenstein, working at the Brooklyn Polytechnic. In view of the similarity to concrete and in honour of the originator of the bergship project, the frozen wood pulp was given the code name of pykrete (Pyke's concrete). Ibid. Pykrete..was ductile and could even be machined on a lathe. Ibid. 104 As a protection against explosives pykrete is weight for weight as good as concrete. 1960New Scientist 28 Apr. 1081/3 The aircraft carrier project showed that the engineering properties of ice are greatly improved by ‘alloying’ it with sawdust (to make ‘pykrete’). 1966Ibid. 3 Feb. 284/3 Just as the Eskimo had learned to stiffen and toughen ice by freezing moss into it, so Pykrete owed its strength to fibres of cellulose that blocked the spread of cracks. |
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