基本解释摩擦带电同根派生 英汉例句It is useful to study the electric property and tribocharging of minerals companying with coal that can be helpful to know the triboelectrostatic beneficiation of fine coal. 研究煤炭中伴生矿物的电性质和摩擦带电,将有利于增强对微粉煤摩擦电选过程的理解。