insulation
/ˌɪnsjuˈleɪʃn; ?@ -səˈl-; ˌɪnsə`leʃən/ n[U]
(a) insulating or (state of) being insulated 隔离; 隔绝; 绝缘; 隔热; 隔音
Foam rubber provides good insulation. 泡沫橡胶隔绝性能良好.
(b) materials used for this 绝缘、 隔热或隔音等的材料
pack the wall cavity with insulation 用隔热材料填充壁腔.