The article proceeds from the characteristic of doing work of electrostatic field strength and proves that electrostatic field is a conservative force field.
文章从静电场力作功的特点出发，说明静电场是保守力场。
Electrostatic field is a very important chapter in electromagnetics and the strength of electric field is one of the two basic physical quantities describing the property of electrostatic field.
静电场是电磁学中非常重要的一章，而电场强度是描述静电场性质的两个基本物理量之一。
If a metal tank is partly filled with charged liquid, such as petroleum products, the electrostatic potential and field strength in the tank would become very high and hazardous.
如果金属油罐内输进一部分带电液体，例如石油类产品，就会在油罐内产生很高的静电电位和电场，并且很危险。
If a metal tank is partly filled with charged liquid, such as petroleum products, the electrostatic potential and field strength in the tank would become very high and hazardous.
如果金属油罐内输进一部分带电液体，例如石油类产品，就会在油罐内产生很高的静电电位和电场，并且很危险。
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