fader在音响上什么意思

　　例句：

　　If you would rather have this volume fader control output, we suggest that you set up the compressor directly between the source and the mixer channel's input.

　　如果你宁愿使用音量推子去控制输出，我们建议你直接在音源和调音台的输入通道中设置压缩器。

　　As the evening rush began on a recent Wednesday, several customers did linger, but not for the reasons Mr. Fader once relied on.

　　最近的一个星期三，随着晚高峰的开始，有好几名顾客确实在书店里逗留了一阵，但原因跟菲德尔所说的不一样。