短語(yǔ)詞組短語(yǔ)petroleum pitch enamel 石油瀝青漆petroleum pitch coke 石油瀝青焦炭petroleum pitch fibre 石油瀝青纖維petroleum pitch enareel 石油瀝青漆petroleum pitch coating 瀝青外覆蓋層petroleum pitch based MCMB 石油瀝青基MCMBpetroleum pitch based -carbon fiber 瀝青基碳纖維 返回 petroleum pitch