| 单词 | heat-shield |
| 释义 | > as lemmasheat-shield heat-shield n. (see quots.). ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > parts of spacecraft > [noun] > coating on capsule carrying off re-entry heat heat-shield1957 1957 W. E. Clason Elsevier's Dict. Electronics 226 Heat shield, a metallic surface surrounding a heat radiating element e.g. a hot cathode in order to reduce the radiation loss. 1962 in J. Glenn et al. Into Orbit 245 Heatshield, as used in Project Mercury missions..consists of a coating of ablative material on the rounded base of the capsule which evaporates during re-entry and carries off much of the heat in the form of a gas. 1968 Times 16 Dec. 7/3 Reentry speed was slightly faster than expected for Apollo 8 and the heat shield on the space~craft was charred to a depth of three-quarters of an inch. < as lemmas |
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