“vertical hold control”的概念、定义、翻译、参考文献-科学参考

单词	vertical hold control
释义	vertical hold control [`vǝrd·ǝ·kǝl ¦hōld kǝn´trōl] ^ELECTRONICS The hold control that changes the free- running period of the vertical deflection oscillator in a television receiver, so the picture remains steady in the vertical direction.
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