| 单词 | contact action | 
| 释义 | > as lemmascontact action   contact action  n. Chemistry = catalysis n. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > 			[noun]		 > processes or substances affecting reactions > catalysis catalysis1836 contact action1859 1859    Todd's Cycl. Anat. & Physiol. V. 138/1  				To be referred to the class of ‘contact actions’. 1882    H. Watts Dict. Chem. II. 12  				Examples of these contact actions are found both in inorganic and in organic chemistry. < as lemmas  | 
	
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