| 常用的化肥 |
2007-6-13 15:43:30 |
0 K |
328 |
★★★ |
| 察尔汗盐池 |
2007-6-13 15:42:45 |
0 K |
34 |
★★★ |
| 察尔汗盐池 |
2007-6-13 15:42:24 |
0 K |
10 |
★★★ |
| 参观自贡井盐 |
2007-6-13 15:40:28 |
0 K |
20 |
★★★ |
| 参观盐场 |
2007-6-13 15:40:06 |
0 K |
82 |
★★★ |
| 参观炼铁厂 |
2007-6-13 15:39:43 |
0 K |
56 |
★★★ |
| 爆炸条件探究 |
2007-6-13 15:38:37 |
0 K |
48 |
★★★ |
| 爆炸事故 |
2007-6-13 15:38:16 |
0 K |
9 |
★★★ |
| 爆炸 |
2007-6-13 15:37:53 |
0 K |
34 |
★★★ |
| 白磷自燃实验 |
2007-6-13 15:37:07 |
0 K |
19 |
★★★ |
| 白磷的自燃 |
2007-6-13 15:36:19 |
0 K |
52 |
★★★ |
| 铵离子的检验 |
2007-6-13 15:35:57 |
0 K |
20 |
★★★ |
| 氨分子的扩散 |
2007-6-13 15:35:37 |
0 K |
9 |
★★★ |
| pH试纸. |
2007-6-13 15:34:50 |
0 K |
16 |
★★★ |
| 自制酸碱指示剂 |
2007-6-13 15:31:37 |
0 K |
320 |
★★★ |
| 自贡井盐 |
2007-6-13 15:31:14 |
0 K |
49 |
★★★ |
| 捉迷藏 |
2007-6-13 15:30:57 |
0 K |
123 |
★★★ |
| 转炉炼钢 |
2007-6-13 15:30:30 |
0 K |
207 |
★★★ |
| 中和热 |
2007-6-13 15:30:12 |
0 K |
120 |
★★★ |
| 中和反应实验 |
2007-6-13 15:29:45 |
0 K |
69 |
★★★ |
| 制乙炔 |
2007-6-13 15:29:24 |
0 K |
105 |
★★★ |
| 制取食盐晶体 |
2007-6-13 15:29:02 |
0 K |
69 |
★★★ |
| 制取明矾晶体 |
2007-6-13 15:28:14 |
0 K |
93 |
★★★ |
| 制取二氧化碳 |
2007-6-13 15:27:29 |
0 K |
316 |
★★★ |
| 制氨 |
2007-6-13 15:27:08 |
0 K |
150 |
★★★ |
| 纸上的层析 |
2007-6-13 15:26:44 |
0 K |
101 |
★★★ |
| 蒸发 |
2007-6-13 15:25:56 |
0 K |
76 |
★★★ |
| 蔗糖粒研细实验 |
2007-6-13 15:24:48 |
0 K |
73 |
★★★ |
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