raw petroleum coke

• 生石油焦,粗石油焦

raw petroleum coke的用法和样例：

例句

1. Bindless carbon materials are prepared with green petroleum cokes or treated carbon powders from coals.
   分别以生石油焦和煤系原料改性炭粉为原料成功制得了无粘结剂高强度炭材料。