After a bit of poking, I found what looked to be a textbook quartz crystal resonant curve, but centered at 20 MHz rather than 10. This suggests there’s a divide-by-two in the driver circuit, perhaps to improve the duty cycle to a more perfect 50%. But more importantly, it suggests that neither the crystal itself, nor the electrical connections between it and the package (since I was probing at the package contacts and not the surface of the quartz), were the source of the failure.
圖像加註文字，週日凌晨，多家伊朗國家媒體電視台證實，哈梅內伊已經被殺。圖像來源，EPA/Shutterstock，推荐阅读新收录的资料获取更多信息
。业内人士推荐新收录的资料作为进阶阅读
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杨本芬上纪录片、上节目、拿大奖时，出版公司的态度是：这个是我推出来的作家，这是我们的重点图书，说得天花乱坠，俨然一副非常有理想的出版人的形象。你让读者支持、相信你的故事，读者相信了。现在梦碎了，大家也醒了，你却躲起来了。。新收录的资料是该领域的重要参考
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