︳璸挡狦
•N = 300 G x 0.3 x 1 x 0.25 x 0.5 x 0.75
x 1 x L/10 G   = 0.84 L •★ 计ヘ眖 N=1
     (碞琌и
   N > 1000
•
•L 琌或
琌и℉﹝砫ヴ