Equal efficiency curved surfaceproduction function is a new concept.
等效益面生产函数是一个崭新的概念。
2
It links up the mine shaft production and the surfaceproduction in the transportation.
他是沟通井下生产与地表生产运输的纽带。
3
Research results have been used in construction of commercial plant as a design basis for increasing dissolution capacity and recovery and simplifying surfaceproduction process.