发烟硫酸

例句：

1. 1. This chemical is used to produce fertilizers and pesticides.
   这种化学物质用于生产肥料和农药。
2. 2. The process involves heating the gas to a high temperature and passing it through a solution of this chemical.
   这个过程涉及将气体加热至高温并通过该化学溶液。
3. 3. The fumes produced by this chemical can be harmful if inhaled.
   这种化学产生的烟雾如果吸入是有害的。