insulator

• 名词，指玻璃、陶瓷等导电或导热性极低的材料，用于阻止电流或热量的传递。

A noun referring to a material, such as glass or porcelain, that has very low electrical or thermal conductivity and is used to prevent the flow of electricity or heat.

1. Electrical insulatorB2formaltechnical

   A material that resists the flow of electric current, used to separate conductors and prevent accidental contact.

   电绝缘体

   • Rubber is a common insulator used for electrical wiring.
   • The power lines are supported by glass insulators.
   • Ceramic insulators prevent electricity from leaking to the ground.

   同义词dielectricnonconductor

   反义词conductor

2. Thermal insulatorB2formaltechnical

   A material that reduces the transfer of heat, used to maintain temperature differences.

   隔热材料

   • Fiberglass is an effective thermal insulator for homes.
   • The vacuum flask uses a double wall as a thermal insulator.
   • Wool is a natural thermal insulator that keeps you warm.

   同义词insulantinsulationlagging

   反义词conductor