Coking is the main reason for the deactivation.

积炭是引起催化剂失活的主要原因。

Each manager has its own activation and deactivation steps.

每个管理器都拥有自己的激活和解除激活步骤。

Also the deactivation reason of the catalyst was discussed.

并对催化剂的失活原因进行了初步探讨。

There can be important consequences of activation or deactivation.

在这里可能有活化或钝化的重要结果。