exponential
                    
      英 [ˌek.spəˈnen.ʃəl]                            
                        美 [ˌek.spoʊˈnen.ʃəl]                    
                    
                    
                    
                 
                
             
                        
            
                1. 指数:ex- "upward" + pon- + -ent. 表明指数放在既在上面又在外面的位置上。
2. exponent + -ial(复合后缀:-y, -al).
3. -ial在有些单词的后面则是为了使-al后缀更合理、更合适地与-t, -c等字母结尾的单词更有效的粘合在一起。            
                        
            
                
- exponential (adj.)
 
- 1704, from exponent + -ial. As a noun, from 1784. Related: Exponentially.
 
                  
                        
            
                
- 1. The policy tried to check the exponential growth of public expenditure. 
  - 该政策试图控制公共开支的迅猛增长。
   
- 2. Populations tend to grow at an exponential rate. 
  - 人口趋向于以指数比率增长.
   
- 3. The logarithmic function is defined as the inverse of the exponential function. 
  - 对数函数是作为指数函数的反函数来定义的.
   
- 4. The envelopes of the strain peaks is an exponential function. 
  - 应变峰值的包络线是一个指数函数.
   
- 5. The frictional dissipation will introduce an exponential decay. 
  - 摩擦耗散可导致指数式的衰减.