的意思 valved

1. The trumpet has three valved pistons for changing the pitch of the notes.
这把小号有三个阀门活塞，用于改变音符的音高。

2. The engine was equipped with a valved exhaust system for improved performance.
这台发动机配备了一个带阀门的排气系统，以提高性能。

3. The doctor used a valved mask to administer oxygen to the patient.
医生使用了一个带阀门的面罩给病人输氧。

4. The air compressor had a valved release to control the pressure.
这台空气压缩机有一个带阀门的排气口，用于控制压力。

5. The diving suit had valved compartments for adjusting buoyancy underwater.
潜水服有带阀门的舱室，用于在水下调整浮力。

6. The musician carefully cleaned the valved keys of his saxophone before the performance.
音乐家在表演前仔细清洁了他萨克斯管的阀门键。