1 Subjects: “...spectrum similarity analysis...”

2 Subjects: “...envelope spectrum...”

3 Subjects: “...acoustic spectrum...”

4 Subjects: “...energy spectrum method...”

5 Subjects: “...fluorescence spectrum...”

6 Subjects: “...fluorescence spectrum...”

7 Subjects: “...fluorescence spectrum...”

8 Subjects: “...sound spectrum...”

9 Subjects: “...sound spectrum...”