The ERF has no obvious effects on sound insolating in moderate or high frequencies, but has apparent effect on th…

无论对声传播还是声激振动，电流变材料的影响都是随频率变化而变化的。

The utility model is characterized in that an insolating hood, a storing cabinet and a water heater control box form an integrative structure.

本实用新型的特点在于把保温罩、存物柜、热水器控制箱等组合成一个整体。