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Effects of different nitrogen application levels on the biological yield and N use efficiency of super rice in Northern China.
The super rice varieties of 'Tiejing 7' and 'Shennong 265' were used to study the matter production,yield and N use efficiency under different nitrogen application levels.The results showed that… Expand
The anti-arc overlying strata structure induced mechanism and control of isolated corner coal pillar working face
In order to effectively control rock burst disaster due to the process of corner coal pillar recovery,it is available to use the theoretical analysis and numerical simulation to analyze the… Expand
Analysis on Variable Cross-section of the Static Set Frame Internal Force
- Li Dianping
In the practical engineering frame structure,in order to reduce weight structure or meet the need of the production,often some rods with the variable cross-section.In the structure mechanics research… Expand