combine test组合测试combinev.联合；使结合；结合n.集团；联合收割机；联合企业combined frequency interference组合干扰Combined Airlift Liaison Office联合空运联络处combined corporate pension plan集合企业年金计划Combined Diesel and Gas Turbine联合柴油机和燃气涡轮combined universal machine tool组合万能机床Combined Intelligence Committee联合情报委员会Combine nuclear and gas turbine核动力和燃汽轮机联合动力装置combined approach tympanoplasty联合处理鼓室成形术Combined heat cutting die mould热切模头combined cycle power generation联合循环发电

1. The organic combination state in selenium-rich red earth and that in rice soil are the main combination patterns.
   富硒红壤和富硒水稻土中的有机结合态硒是土壤中的主要结合态。