supplementary variable

在延伸树法中，选取好的补充变數(supplementary variable)是最重

无能量补充井,no energy feeding... ... ) additional producer 补充生产井 ) supplementary variable 补充变量 ...

辅助变量,auxilia... ... ) secondary variable 辅助变量 ) supplementary variable 辅助变量 ) instrumental variables 辅助变量 ...