duplex tandem compressor

例句：

1. 1. The new duplex tandemcompressor is more efficient than theold one.
   这款新型双联式压缩机比旧款更高效。
2. 2. Theengineers are installing anew duplex tandemcompressor in the factory.
   工程师们正在工厂安装一台新的双联式压缩机。
3. 3. The duplex tandem compressor is used to reduce noise and improveairflow.
   双联式压缩机用于降低噪音和改善空气流通。