| 单词 | top-contact | 
| 释义 | > as lemmastop-contact   top-contact  n. contact at the top or upper surface.ⓘ ΘΚΠ the world > space > distance > nearness > 			[noun]		 > contiguity > contact at top top-contact1850 1850    D. J. Browne Amer. Poultry Yard 114  				Artificial heat most ingeniously applied by ‘top contact’. 1850    D. J. Browne Amer. Poultry Yard 114  				The difference..between top-contact heat and that received from radiation as applied to hatching. < as lemmas | 
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