HMG与甘氨酸的反应是二级反应。
The reaction of HMG with glycine is a second order reaction.
当水流通过阀门，二级反应将会发生。
As water flows through the valve, a secondary response occurs.
上述反应称为二级反应。
反应器安全状况等级为二级，检定周期定为6年。
The safe situation classification of reactor is second class. The detection peroid is 6 years.
结果表明：二级生物催化氧化反应工艺比单级氧化反应工艺效果好。
The results show that the two-stage process is better than the single-stage.
结果表明：二级生物催化氧化反应工艺比单级氧化反应工艺效果好。
The results show that the two-stage process is better than the single-stage.
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