| 21. | Pasted plate immediately were given an acid and stored overnight. |
| 涂好的极板立即进行浸酸，储存一整夜。
|
| 22. | Oxalic acid is always formed during the reaction. |
| 在反应过程中，乙二酸总是会生成的。
|
| 23. | Soy bean oil and its products normally contains only 7 to 11% palmitic acid . |
| 豆油及豆油制品在正常情况下只含7-11%的软脂酸。
|
| 24. | Acid rain has a devastating effect on the environment. |
| 酸雨对环境有破坏性的影响。
|
| 25. | The preparation of this acid seems to have been first described as far back as the 15th century. |
| 这种酸的制法似乎早在15世纪就已有了记载。
|
| 26. | The acid had burned into the pan. |
| 酸已经腐蚀了这只平底锅。
|
| 27. | The acid gnaws at the metal. |
| 酸会腐蚀金属。
|
| 28. | Acid gnaws into iron. |
| 酸能腐蚀铁。
|
| 29. | The acid bit its way through the metal. |
| 酸腐蚀了这金属。
|
| 30. | neutralize a poison,an acid |
| 解毒, 把酸中和
|