第二级安全性让您可以创建更加复杂的数据特有的逻辑。
The second level allows you to create more complex data-specific logic.
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.
建筑结构安全等级二级，设计使用年限为50年。
The structural safety class is second class, design working life is 50 years.
设计边坡安全等级为二级至一级。
The design safety rank of the slope is second to first class.
设计边坡安全等级为二级至一级。
The design safety rank of the slope is second to first class.
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