发明授权
US3979614A DT cut, contour mode piezoelectric crystal 失效
DT切割,轮廓模式压电晶体

DT cut, contour mode piezoelectric crystal
摘要:
In a crystal element of the type wherein a DT-cut crystal element is used to generate vibrations of the contour mode, one side of the crystal element is flat and the thickness of the element is gradually decreased from the center toward the periphery thereof.
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