| 单词 | radiation resistance |
| 释义 | > as lemmasradiation resistance radiation resistance n. (a) Physics the part of the electrical resistance of an aerial that is due to its radiating properties, being the ratio of the radiated power to the mean square current in the aerial; an analogous property of a sound radiator; (b) resistance to the effects of ionizing radiation. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > radiation field > electrical resistance of aerial radiation resistance1913 1913 J. Erskine-Murray Handbk. Wireless Telegr. (ed. 4) xiv. 223 The fourth numeric of the antenna, namely r, the radiation coefficient or ‘radiation resistance’, is that on which transmission actually depends. 1938 F. E. Terman Fund. Radio xvii. 435 The presence of the air in contact with the vibrating diaphragm produces a mechanical radiation resistance..which varies with frequency. 1975 D. G. Fink Electronics Engineers' Handbk. xix. 55 A loudspeaker designed to resonate at a low frequency combines decreasing velocity with increasing radiation resistance to yield a uniform response. 1977 Radiation Res. 69 270 Radiation resistance of surviving spore populations was shown to increase with increased exposure to sublethal γ irradiation. 1994 SIAM Rev. 36 637 This means that the radiation resistance should be twice the Poynting value, something that will come as a surprise to generations of radio engineers. 2006 Austral. Mag. (Nexis) 18 Nov. 42 The king of radiation resistance is the bacterium Deinococcus radiodurans, which can tolerate 1.5 million rads. < as lemmas |
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