The DPM method needs lot of field data, mainly to study nitrogen cycle in field, assess water and nitrogen usage efficiency and optimize management soil water and nitrogen fertilizer.
动力学模型需要大量的田间实测资料，主要应用于农田氮素循环、定量评价水氮资源利用率、优化水肥管理措施等方面。
Operational efficiency is improved by controlling fracture placement to reduce water, proppant usage, and horsepower for productive stimulation treatment and reduced operational footprint.
通过控制布裂提高施工效率，减少水和支撑剂的用量，降低增产处理所需的水马力，减少施工所需空间。
Fore water resources, the key problem of China is the efficiency of water usage.
中国水资源问题的核心是利用效率问题。
Fore water resources, the key problem of China is the efficiency of water usage.
中国水资源问题的核心是利用效率问题。
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