断だん熱ねつ性せい

noun

thermal insulation properties; heat-insulating quality

Technical term used in engineering, architecture, and product specifications to describe how well a material or structure resists heat transfer.

• この窓まどガラスは断だん熱ねつ性せいが高たかいので、冬ふゆでも部屋へやが暖あたたかい。

  This window glass has high thermal insulation properties, so the room stays warm even in winter.

• 断だん熱ねつ性せいを向こう上じょうさせるために、壁かべに断だん熱ねつ材ざいを追つい加かした。

  To improve the thermal insulation, we added insulation material to the walls.