sorry不爱
发表于 2017-12-21 06:48:47
参与/回复主题关闭
RE: [意大利/四级] 爱
cwg1982
发表于 2017-12-21 10:26:36
11111111111111111
hjian
发表于 2017-12-21 12:01:21
fdgfdgfdffhgfhgvgvnbvnb
dellone
发表于 2017-12-21 14:44:23
感谢楼主分享
崇紫
发表于 2017-12-21 14:52:53
The Dreamers 2003
liuqun15
发表于 2017-12-21 23:52:05
7777777777777777777777777777777777777
cybcyb72
发表于 2017-12-24 23:53:08
多谢楼主分享!
ken236
发表于 2017-12-25 20:49:25
支持!!!!
kingelva
发表于 2017-12-26 00:30:36
感谢分享
3859043
发表于 2017-12-26 10:43:34
爱作爱作梦 The Dreamers 2003 中文字幕
hongheliu
发表于 2018-1-8 19:50:31
感谢楼主分享
luolikong21
发表于 2018-1-16 12:29:54
21211212212
abl050203
发表于 2018-1-22 21:45:03
爱作爱作梦 The Dreamers 2003 中文字幕
十号
发表于 2018-1-28 21:39:30
To prepare Zn–Fe–NO3, the method of co-precipitation was used
(Scheme 1). Zinc nitrate solution was mixed with an iron nitrate one
(4:1 molar ratio). Under constant stirring, a solution of sodium hydroxide (3.7 mol/L) was added slowly till the precipitation was completed.
The resulting precipitate was kept at 70±0.5 °C for 10 h. Then, it was
filtered and washed with bi-distilled water a number of times. Then,
the obtained precipitate was dried at 80±0.5 °C for 24 h
a13628489738
发表于 2018-2-1 20:48:01
感谢楼主分享
w360355553
发表于 2018-2-2 00:13:37
saojb
发表于 2018-2-19 01:26:49
谢谢楼主的分享
tiantianfasong
发表于 2018-2-27 21:42:00
谢谢楼主分享
wang296002408
发表于 2018-2-27 23:21:59
哈哈哈还好还好
zhangzy
发表于 2018-2-28 02:39:36
谢谢分享