Similar to 水晶振動子

1

2

3

4

6

7

8

9

13 (number)

19 (number)

40 (number)

70 (number)

Piezoelectric sensor

Gallium phosphate

Daring-class destroyer (1949)

I Corps (South Korea)

4th SS Polizei Panzergrenadier Division

Dirlewanger Brigade

1993 Russian constitutional crisis

Twelve-step program

1940s

1950s

1951