前缘锯齿对边界层不稳定噪声峰值频率没有影响。
The leading-edge serrations have no effect on the instability noise peak frequency.
由于锂漂移型探测器有噪声大、不稳定等弱点，我们在新一代仪器上采用了离子注入型pin探测器。
Because the lithium drifting detector has the noise in a big way, unstable and so on the weakness, we have used the ion implantation PIN detector on the new generation of instrument.
测试结果表明，国产机噪声异常主要是由于不稳定燃烧造成的。
Analytical results show that the unusual noise source is chiefly due to unsteady combustion.
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