????????????????2??????????????????? ???????2????????

1?????????????2?????????????

2??????????ж????????500?????????????500????????????DW(????????????)??

3?????????????????????????100?????????400?????????????400???????????????????????????????300???????棻

4????????????299(?????????-1??????????????????300??300-1=299)??????????????????????????????200??????????????199??????????????????99???????棻

5????????????????????????????????????????? 100??99 ?? ?????????????999??998???????????????

6??????????????????????999???????????????????????????!

?????????????40407??????????http://www.audiogearreviews.com/bwlb/