说明的类型通常有机内置（使小调整数-见下文）以及主要的可变电容器。
The type illustrated usually has trimmers built in (for making small adjustments - see below) as well as the main variable capacitor.
说明的类型通常有机内置（使小调整数-见下文）以及主要的可变电容器。
The type illustrated usually has trimmers built in (for making small adjustments - see below) as well as the main variable capacitor.
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