noiseproof

noiseproof

1. RESEARCH OF TYPE ES-1 (PVC) UMBRELLA SHAPED EAR PLUG NOISEPROOF

ES-1型(PVC)伞形防噪声耳塞的研究

2. noiseproof feature

抗干扰特性 抗噪声特性

3. performance of noiseproof

抗扰动性能

4. Keywords vibration and wave;concrete mixer;noise control;compound structure noiseproof device;

振动与波;混凝土搅拌机;噪声控制;可拆式隔声房;