100% Cotton braids : Cotton braids, stranded together with insulated conductors, protect the conductors from vibrations and acousticnoises and assures the round shape of the cable.
100%棉质纱辫：棉辫与绝缘导体绞合可以防止震动和噪音，并且能使线材保持圆形构造。
2
Carmakers already take engine noises seriously enough to use acoustic engineers to tune exhaust pipes, especially for high-performance cars.
汽车制造商已认真考虑使用音响引擎使扰人的鸣笛变得悦耳，这对高性能车尤其重要。
3
Acoustic vector sensor with the electronic rotating directivity of dipole can effectively detect signal in the background of noises. More information can certainly be obtained by vector sensor array.