1 Subjects: “...regulations...”

2 Subjects: “...regulation...”

3 Subjects: “...pH regulation...”

4 Subjects: “...environmental regulations...”

5 Subjects: “...frequency regulation...”

6 Subjects: “...regulation...”

7 Subjects: “...energy policies and regulations...”

8 Subjects: “...regulated deficit irrigation (RDI)...”

9 Subjects: “...combined method of power regulation...”

10 Subjects: “...coal regulation...”

11 Subjects: “...load regulation...”

12 Subjects: “...regulation and improvement of roof-connection measures...”

13 Subjects: “...regulated e-waste recycling...”

14 Subjects: “...environmental regulations...”

15 Subjects: “...reverse regulation...”

16 Subjects: “...variable-flow regulation model...”