zài / yǒu / jī / huà / xué / zhōng / jiàn / xiàn / shì / shì / biǎo / shì / fēn / zǐ / jié / gòu / de / cháng / yòng / fāng / fǎ在有机化学中,键线式是表示分子结构的常用方法。In organic chemistry, skeletal formula is a common method to represent molecular structures.