多拉克说，虽然在距离水牛城机场10英里范围内的居民早就习惯了头顶上飞机轰鸣的声音，但是这一次的声音显然比平时剧烈得多，速度也快得多，发出的声响也很奇怪。
Dworak said while residents of his neighborhood about 10 miles from the Buffalo airport were used to planes rumbling overhead, this one sounded louder than usual, sputtered and made some odd noises.
秘诀：如果你想在某个声响上提升某个频率范围，尝试去到其他声响上切掉异样的频率范围来进步声响的清晰度并且避免冲突。
Tip: If you boost a certain frequency range on one sound, try to cut that same frequency range on other sounds to improve clarity and avoid clashes.
压缩机在运行过程中发出不正常的声响或压力、温度超过允许范围时应立即停机检查。
If the compressor has any abnormal sounds, pressure or temperature, it should be shut down and checked instantly.
压缩机在运行过程中发出不正常的声响或压力、温度超过允许范围时应立即停机检查。
If the compressor has any abnormal sounds, pressure or temperature, it should be shut down and checked instantly.
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