| 单词 | pre-combustion | 
| 释义 | Definition of pre-combustion in English:pre-combustionnoun ˌpriːkəmˈbʌstʃ(ə)n 
 Origin1920s. From pre- + combustion. Definition of pre-combustion in US English:pre-combustionnounˌpriːkəmˈbʌstʃ(ə)n 
 Origin1920s. From pre- + combustion.  | 
	
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