Listing 4 shows an example of the power of adding a simple validation routine to the account number field to make sure it cannot be a non-number in addition to using static columns.
清单 4 显示了除使用静态列外，还可以向帐户编号字段添加简单验证例程以确保输入值不是非数字值。
This Static Locator is a non-contact meter that indicates electrostatic field voltage and polarity on charged surfaces.
该静态定位器，是一种非接触的产品，用于检测静电场励磁电压和极性表面。
Under the circumstances of axial symmetric and non-static current distribution, a method for calculating off-axis electromagnetic field is given by using Maxwells equations and axial symmetry.
在轴对称非静态电流分布的情况下，利用麦克斯韦方程组和轴对称性，给出了轴外电磁场的一种计算方法。
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