油菜杂种优势利用途径主要有三系法和两系法。
研究得到的两系法杂交稻制种技术的气象学方法可供其他熟制地区应用。
The agrometeorological technique for making hybrid rice seeds is applicable to zones of other rice cropping systems.
条件型雄性不育是指植株在特定的条件下育性相互转换，可以作为两用系，用于两系法杂交制种。
Conditional (reversible) male sterile line in plants would be fertile under special conditions, and thus could be used as two-line to produce hybrid seeds.
这个通过基因工程的方法获得的光敏雄性不育系可应用到“两系法”育种中，用以生产杂交水稻。
This photosensitive male sterility (PGMS) line produced by the expression of antisense-OsPDCD5 could be applied in production of hybrid rice using two-line breeding system.
“华两优106”是以早熟早籼型温敏核不育系“M103S”为母本，与早稻新品系“T1005”配组而成的两系法杂交早稻新组合。
"Hualiangyou 106" was bred by crossing between early-maturing early indica temperature-sensitive genetic male sterile line "M103S"(mother parent) and new early rice line "T1005".
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.
提出了一种基于虚拟左、右像片像空间坐标系的二维直接定位法，可快速提取工业测量系统两台经纬仪之间的相对定位元素并完成相对定位。
The relative location element between two theodolites in the industrial measuring system (IMS) can be picked up rapidly and the relative location can be completed by the method.
针对于天空的建模，提出了两种改进方法：旋转球面坐标系法和修改纹理坐标法。
Based on the modeling of the sky, two improved methods were proposed: rotate the coordinate system of the sphere, and modify the coordinate of the texture.
用成对样本t检验法比较同一无性系内两种外植体的差异用成组样本t检验法比较两组无性系间的差异。
Paired sample t test method was used to compare the difference between the two explants of the same trees. Independent sample t test method was used to determine the difference between the two groups.
用成对样本t检验法比较同一无性系内两种外植体的差异用成组样本t检验法比较两组无性系间的差异。
Paired sample t test method was used to compare the difference between the two explants of the same trees. Independent sample t test method was used to determine the difference between the two groups.
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