n.电介质；绝缘体
adj.非传导性的；诱电性的

The dielectric material in this transformer increases its efficiency by reducing energy loss.
这种变压器中的介电材料通过减少能量损失提高了效率。
A high dielectric constant is essential for capacitors to store large amounts of electrical charge.
高介电常数对于电容器储存大量电荷至关重要。
The dielectric strength of rubber is much higher than that of air, making it suitable for insulating wires.
橡胶的介电强度远高于空气，因此适合用于电线绝缘。
In an electric field, a dielectric material allows the flow of charges but at a slower rate, acting as a barrier.
在电场中，介电材料允许电荷流动但速度较慢，起着屏障的作用。
The dielectric breakdown of a material occurs when it can no longer withstand the applied electric field without conducting electricity.
当材料无法再承受所施加的电场而不导电时，就会发生介电击穿。
The dielectric properties of a material determine how well it can insulate against electrical currents.
材料的介电性质决定了它对电流的绝缘性能。
Engineers carefully select the dielectric for microchips to minimize signal degradation over long distances.
工程师精心选择微芯片的介电材料，以最小化长距离传输信号的衰减。
A ceramic with a high dielectric constant is often used in radio frequency (RF) devices for improved signal transmission.
高介电常数的陶瓷常用于射频设备中，以提高信号传输。
The dielectric loss tangent is a measure of a material's ability to dissipate energy in an alternating electric field.
介电损耗角正切是衡量材料在交变电场中能量耗散能力的一个指标。
The performance of a capacitor is influenced by the dielectric's capacitance and its temperature-dependent dielectric constant.
电容器的性能受介电常数（包括其随温度变化）和电容的影响。