variable gain的用法和樣例：
例句
- To gain further bisymmetric baseband signals, the proposed transconductance stage is formed with a cross-coupled type.
之後經過可變增益放大器將升頻后之訊號放大到功率放大器所要求之強度。 - A low power mixer and a basedband variable gain amplifier are designed for frequency downconversion and gain-adjustment, respectively.
最後實現了一個低功率的混頻器及基頻可變增益放大器，且此放大器可線性調整增益。
