2012/11/20 17:41 I 阅读:1015

|
时间
|
流动相A(%)
|
流动相B(%)
|
|
0
|
35
|
65
|
|
5
|
10
|
90
|
|
10
|
0
|
100
|
|
20
|
0
|
100
|
|
21
|
35
|
65
|
|
25
|
35
|
65
|
