恢复失效离子交换剂的离子交换容量的英文

• lkg

• 恢复:    resume; renew; return to
• 失效:    lose efficacy; lose effectiv ...
• 离子交换剂:    ion exchanger
• 的:    4次方是 The fourth power of 2 i ...
• 离子交换容量:    ion exchange capacity