                                             
һ    6                                һ    Чλʱ+15%+15%
   10                                   Чλʱ+30%+30%
   12                                   Чλʱ+50%+50%
ļ   15   10%                          
弶   18   10%                      һ    Ĺʱ˺ǿΪ1.3 
   25   10%                          Ĺʱ˺ǿΪ1.35
߼   30   10%                          Ĺʱ˺ǿΪ1.5

   
һ    40%ʱ35%
    60%ʱ55%
    70%ʱ70% 
    
                                                յ                         
һ        	+5%            һ     1.5  
	+10%                2 
	+15%                2.5	
ļ         	+20%
弶	+30%
	+40%
߼	+50%

  	
һ	ԾΪ1.7  ԭ1.3Ϊֻܸ  û Ҳһ£

  
һ      +30
      +45
      +60     ÿ15 ܶ࿹һ ҩˣ

