电气石的异极对称结构导致了其独特的电学性质——永久性自发电极性，表现为电气石微粒周围自发电场的存在。
Tourmaline with polar asymmetry structure has its particular electric characteristics-spontaneous polar electricity, which show as electrostatic electric field existing around mineral particles.
这不仅仅表现在动电学研究上，更重要的是，由此开启了人类的电气时代。
This is not only reflected in the electrokinetic research, more important, thus opening the electrical era in human.
在从事电路系统之前，熟练的电气工要学习电学、电磁学和安全用电守则。
Skilled electricians learn the theory of electricity, magnetism, and electrical safety before they begin working with electrical systems.
在从事电路系统之前，熟练的电气工要学习电学、电磁学和安全用电守则。
Skilled electricians learn the theory of electricity, magnetism, and electrical safety before they begin working with electrical systems.
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