Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Parallel Plate Capacitor

平行板电容器
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The capacitance of flat, parallel metallic plates of area A and separation d is given by the expression above where:

= permittivity of space and
= 空间和的电容率
k = relative permittivity of the dielectric material between the plates.

k=1 for free space, k>1 for all media, approximately =1 for air.

The Farad, F, is the SI unit for capacitance, and from the definition of capacitance is seen to be equal to a Coulomb/Volt.

法拉（F）是电容的SI单位，从电容的定义可以看出，电容等于库仑/伏特。

Any of the active parameters in the expression below can be calculated by clicking on it. Default values will be provided for any parameters left unspecified, but all parameters can be changed. After editing data, you must click on the desired parameter to calculate; values will not automatically be forced to be consistent.

下面表达式中的任何主动参数都可以通过点击它来计算。未指定的参数将提供默认值，但所有参数都可以更改。编辑数据后，必须点击所需的参数以进行计算；值不会自动保持一致。
Capacitance = k x ε0 x area / separation
电容 = k x ε₀ x 面积 / 距离

For parallel plates of area A = m2 and separation d = m,
with relative permittivity k= , the capacitance is

对于面积为 A = m²、间距为 d = m、相对电容率为 k= 的平行板，其电容为
中文译文中的待填/计算数值依次对应：1：a 2：d 3：k。实际数值以上方原输入框为准。
平行金属板的面积为A，间距为d时，其电容由上述表达式给出，其中：k为板间介电体的相对电容率。k=1表示自由空间，对于所有介质k>1，近似等于1对于空气。
C = μF = x10^ F = pF
= 10^ F = pF
中文译文中的待填/计算数值依次对应：1：cb 2：cp 3：cpf。实际数值以上方原输入框为准。
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Capacitor Concepts
索引电容器概念
 
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Capacitance of Parallel Plates

平行板的电容

The electric field between two large parallel plates is given by

两块大面积平行板之间的电场由
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The voltage difference between the two plates can be expressed in terms of the work done on a positive test charge q when it moves from the positive to the negative plate.

两极之间的电压差可以表示为正检验电荷q从正极移动到负极时所做的功。

It then follows from the definition of capacitance that

由此可得，根据电容的定义
Calculation
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Effect of dielectric
介电体效应
What is the dielectric constant?
什么是介电体常数？
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Capacitor Concepts
索引电容器概念
 
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计算模块中未附着于文字的输入框：
中文译文中的待填/计算数值依次对应：1：cm。实际数值以上方原输入框为准。