For example, a Russian depressurization pump initially produced 100 dB, but after it was retrofitted on the ground with four isolation mounts ($13.95 each), it generated 60 dB.

• 譬如俄国的减压泵原本会产生100分贝的噪音，但将同样的泵在地上加以修改，装上四个绝缘固定座（每个才13.；95美元）之后，它所产生的噪音只剩60分贝了。