field boundary meaning in Chinese
农田边界
油田边界
Examples
- Far field boundary condition
远场边界条件 - The walls mark field boundaries and also serve a double purpose as well ? farmers needed somewhere to pile the stones they had to remove from their rock - strewn fields in order to farm
这些墙在标记田地边界的同时，也为农夫们在耕地时挖出的石头提供了一个放置的场所。 - The markov chains ' analysis results show that the expected casualty of the former form is the same as one of the latter form at unknown or infinite mine - field boundary , the expected casualty of the former form is less than one of the latter form at known or finite mine - field boundary
根据马尔可夫过程理论的分析，可以比较出2种清扫模式下扫雷艇期望损失在雷区边界未知或无限时是相同的，而对边界已知的有限雷区，边缘渐进模式的期望损失比中心航道模式小。 - 9 . for calculating the variable fertilizing dose , a mathematics model was selected . the model takes account of the yield goal , soil fertility , fertilizer available ingredient content , and the fertilizer using efficient . in the beijing precision agriculture demo farm , the system was used for base map mapping , field boundary map update , soil nutrition map generating , yield map generating , and field basic information management
在北京精准农业示范区，对设计开发的农田地理信息、系统进行了gps测绘、坐标系转换、电中国农业大学博士学位论文摘要一子地图更新、土壤采样规划、田间信息分布图与作物产量分布图生成、农田管理区划分、目标产量图生成、变量施肥处方图生成以及基本信息管理等方面的测试与实际工作。 - The numerical algorithm of solving the adjoint equations for different design cases have been developed by using finite volume methodology which is usually used to solve the flow governed equation . it includes the some important aspects , such as flux formulation , wall and far - field boundary treatment methodology , dissipative term formulation , etc . after the solution of the adjoint equations is obtained , the derivatives of the cost function with respect to all the design variables can be evaluated with the same operation . this can yields a significant saving over the other gradient - based techniques when there are many design variables
( 3 )进行了应用控制理论和三维欧拉方程的机翼气动反设计研究，以及有升力约束情形下机翼跨音速减阻问题研究，分别推导了相应的共轭方程及边界条件数学表达形式，研究与发展了三维共轭方程的有限体积数值求解方法，及相应梯度公式的数值求解方法，通过对计算网格生成、流场计算、共轭方程数值求解、梯度求解和优化算法等多方面的有效结合，成功发展了三维机翼的气动反设计和跨音速减阻优化设计程序，成功地进行了多个设计算例研究。