︳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