<p>本文就机械式与电子式的差异进行说明。</p>
<img alt="声音元件" data-align="center" data-entity-type="file" data-entity-uuid="6f0c45a6-29c6-428c-a281-936ca3045c95" src="/sites/default/files/inline-images/1_24.jpg" /><img alt="声音元件" data-align="center" data-entity-type="file" data-entity-uuid="5d6d58c4-6800-433b-a82e-740363d6c5d9" src="/sites/default/files/inline-images/2_2.PNG" /><img alt="声音元件" data-align="center" data-entity-type="file" data-entity-uuid="6996dc0c-c2f1-44d8-8102-fbe9387d41e4" src="/sites/default/files/inline-images/3_1.PNG" />
<p> </p>