Energy saving of centrifugal compressor not only satisfies the flux and pressure of pipeline system, but also verifies vibration when choosing the extent of loweringspeed.
压缩机节能改造不仅要满足管路系统流量、压头的需要，在确定降速幅度时还要进行喘振的校核。
3
The law lowering the speed limit for cars helps to save fuel.