A New Cucumber F1 Hybrid — Jiza No.9 ;
黄瓜新品种吉杂9号的选育
Breeding of Shuza No.9, a double-low cytoplasmic male sterile hybrid rapeseed;
双低三系杂交油菜蜀杂9号选育研究
A nine-intersection model is a common one used to represent the topological relations between 3D spatial objects,but it has a problem of great redundancy.
9-交模型是一种表达三维空间拓扑关系的常用方法,但存在着冗余度大等问题。
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