油菜杂种优势利用途径主要有三系法和两系法。
父本R40 2是湖南安江农校选育成的三系法早杂恢复系。
Its paternal parent"R402" is a three-line hybrid restorer line of early rice.
你还应在教育系学两门三个学分的课程。我建议你学教育心理学和视听法及视听设备。
You also should take two three-credit courses in the Education Dept. I suggest Educational Psychology and Audio-visual Methods and Aids.
它耦合了三维刚塑性有限元法，弹性有限元法和计算辊系变形的影响函数方法。
Three-dimensional rigid-plastic finite elements, elastic finite elements and influential function method for the analysis of deformation of rolls system are combined.
采用有限体积法在桨叶固接坐标系直接求解三维欧拉方程。
The approach is to solve the Euler equations in a rotor fixed frame of reference using a finite volume method.
介绍应用几何溶液模型法预测三元系表面张力的新方法。
A new method for predicting the surface tension of ternary from biliary ones by using geometric solution model is given.
1990年，采用病区病圃剪叶接种法，对杂交稻三系资源及组合3098份进行了鉴定。
In 1986-1990 the leaf inoculation method was used in a diseased area or nursery to identify 3098 three line materials and rice hybrids.
本文在延拓法基础上对光滑实心转子异步电机电磁场进行了三维直角坐标系多层理论研究。
The paper shows the research of the multi-layer theory of smooth solid rotor induction machines.
采用剖析图法从三维透视角度研究了太湖西北地区浅覆盖区第四系。
Using the method of the anatomic drawing, the authors studied the shallow Quaternary cover in the northwest of the Taihu Lake from an Angle of 3d stratigraphic perspective.
采用剖析图法从三维透视角度研究了太湖西北地区浅覆盖区第四系。
Using the method of the anatomic drawing, the authors studied the shallow Quaternary cover in the northwest of the Taihu Lake from an Angle of 3d stratigraphic perspective.
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