These contracts were similar to service contracts and required the IOCs to invest their own capital and expertise to develop an oil or gas field.
这些合同类似于服务合同，要求国际石油公司投入自己的资本和专业技术来开发一个油气田。
These contracts were similar to service contracts and required the IOCs to invest their own capital and expertise to develop an oil or gas field.
这些合同类似于服务合同，要求国际石油公司投入自己的资本和专业技术来开发一个油气田。
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