- Active red in aqueous solution is decolored near 100% with TOC removal rate of 75%.
- active red printing and dyeing wastewater
- A bright red welt rose on his arm.
- The results show that among the three kinds of seeds, the activated red mud has the best desilication effect and the silicon index of desilication solution can meet the requirement.
- The orient has been playing an active role in the world economy.
- A red light is usually a signal of danger.