国产三级伦理在线,久久久久黄久久免费漫画,成人国产精品日本在线,欧美美最猛性xxxxxx

規格

Cu%

Sn%

Zn%

Pb%

松裝密度

流速s/50g

目數

Cu85Sn6Zn6Pb3

83-86

5-7

5-7

2-4

2.5-4.5

35-40

-200,-300

Cu80Sn10Pb10

79-81

9-11

9-11

3.5-5.0

20-30

-100,-200

Cu80Zn20

79-81

19-21

2.0-4.5

30-35

-200

Cu90Sn10

89-91

9-11

2.5-4.5

20-35

-200,-300

Cu85Sn15

84-86

14-16

2.5-4.5

20-35

-200,-300

Cu80Sn20

79-81

19-21

3.0-5.0

20-35

-200,-300