But there 's still some difficulty when it comes to the management of the complex space property rights under existing system and the problem need lucubrating .
但现行体制下对产权复杂的空间领域的管理仍然是难点，有待研究。
By lucubrating balance of the overall volume of water resources in shuangta irrigation area of hexi aisle , it supplies a sufficient basis for establishing scientific management mechanism and reasonable exploitation and utilization of water resources .
