Such cables record reflections with less interference from noise than was usually possible with earlier types . 用这类电缆纪录反射波，干扰噪音比以前应用的各类电缆要小。
2.
Seasonal adjustments to price indices are never complete and there is something called statistical noise that even statisticians cannot explain fully 不过，价格指数的季节调整没完没了，此外还有一些即使是统计师也无法说个明白的所谓统计干扰噪音。
