介电常数

The permittivity of free space, denoted ε₀, is a fundamental constant in electromagnetism, approximately equal to 8.854 pF/m.
免费空间的介电常数（ε₀）是电磁学中的基本常数，大约等于8.854皮法拉/米。
In a dielectric material, the permittivity is higher than that of a vacuum, allowing it to store electrical energy more effectively.
在绝缘材料中，介电常数高于真空，能更有效地储存电能。
The permittivity of water is about 80 times greater than that of air, which affects its ability to conduct electricity.
水的介电常数大约是空气的80倍，这影响了它导电的能力。
The permittivity of a material determines how much it resists an electric field, and thus influences capacitance in capacitors.
材料的介电常数决定了它对电场的抵抗程度，进而影响电容器的电容。
The high permittivity of ceramics makes them suitable for use in high-frequency electronic components like resonators and capacitors.
陶瓷的高介电常数使其适合用于高频电子元件，如谐振器和电容器。
The permittivity of a semiconductor varies with temperature, which can be exploited in certain electronic devices.
半导体的介电常数随温度变化，这在某些电子设备中有利用价值。
The relative permittivity of a substance is the ratio of its absolute permittivity to that of a vacuum.
物质的相对介电常数是其绝对介电常数与真空介电常数的比值。
The measurement of permittivity is crucial in understanding the behavior of materials in electromagnetic fields, particularly in the context of dielectric breakdown.
测量介电常数对于理解材料在电磁场中的行为至关重要，尤其是在绝缘击穿的背景下。
Engineers often need to calculate the effective permittivity of composite materials, which is a function of the individual constituent materials' properties.
工程师经常需要计算复合材料的有效介电常数，这取决于各组成材料的特性。
The permittivity of biological tissues can be affected by hydration levels, making it important for medical imaging techniques like MRI.
生物组织的介电常数会受到水分含量的影响，这对于像MRI这样的医学成像技术非常重要。