宽馏分煤焦油
wide distillation range coal tar
中原原油馏分油
Zhongyuan crude fractions
低温煤焦油
low temperature coal-tar
low-temperature coal tar
low temperature tar
low-temperature carbonization tar
coaltar
高温煤焦油
high temperature coal tar
high-temperature coal tar
焦煤分加
coke and coal mixture charging
炼焦煤分布
coal for coking distribution