| 单词 | ion pair | 
| 释义 | > as lemmasion pair   ion pair  n. a pair of oppositely charged ions; spec.		 (a) such a pair held together in a solution by electrostatic attraction;		 (b) a positive ion and an electron (or a positive ion and a negative ion) formed from a neutral atom or molecule by the action of radiation. ΘΚΠ the world > matter > chemistry > ions, ionization, or electrolysis > 			[noun]		 > ion > ion pair ion pair1924 the world > matter > physics > atomic physics > ion > 			[noun]		 > pair ion pair1924 1924    Jrnl. Physical Chem. 28 1000  				Such ion pairs are never widely separated but each aids in forming the effective surfaces of the electrical double layer. 1933    Jrnl. Amer. Chem. Soc. 55 477  				The changes in the properties of the solvent..caused by the presence of undissociated (non-conducting) ion pairs will be neglected. 1988    H. A. Klein Sci. Measurem. l. 663  				The alpha rays emitted in the nuclear disintegration of the bismuth isotope Bi-214, also called ‘Radium C’, produce about 25,000 ion pairs per centimeter of travel. 2005    Bios 76 24/2  				The thermal stability as a function of the numbers of ion pairs and hydrogen bonds has been analysed for 16 families of proteins. < as lemmas | 
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