Progress of bio - remedy technology for oil - contaminated soil 重质石油污染土壤的生物修复
2.
Chavez this week signed a decree for the government to take a majority stake in four heavy crude upgrading projects in the orinoco basin by may 1 查维斯在上周签署了一项政府法令，要求在今年5月1日前收回4个在奥里诺科河盆地的主要重质石油生产改造项目。
