未来中国原油产量
future Chinese oil production
30万吨原油码头
300000 DWT crude oil terminal
300
00-ton crude oil handling terminal
累积产量-时间关系
cumulative production-time relationship
劳动平均产量
average product of labour
劳动的边际产量
marginal product of 1abour
劳动边际产量
Marginal product of labor