jīn shǔ jiàn / zhōng / zì yóu diàn zǐ / lí yù / shǐ / jīn shǔ / jù yǒu / dǎo diàn xìng

金属键中自由电子离域，使金属具有导电性。

In metallic bonds, free electrons are delocalized, giving metals electrical conductivity.