chromous acid

例句：

1. 1. The chemical was used to stainthe wood.
   这种化学物质被用来染色木材。
2. 2.The chromous acid reacted withthe metal to form a new compound.
   铬酸盐与金属反应形成了一种新的化合物。
3. 3.The chromous acid is highly corrosive and can cause severe damage toequipment.
   铬酸盐具有很强的腐蚀性，会对设备造成严重损害。