共 2 条
[1]
Piezoelectric crystal oscillators applied to the precision measurement of the velocity of sound in air and Co-2 at high frequencies.
[J].
PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES,
1925, 60 (1/14)
:271-302
[2]
ZUHLKE, 1935, ANN PHYS, V21, P667