定向遗传改良提供优良的遗传转化技术体系。

Thus to provide the oriented genetic improvement of rice varieties a superb genetic transformation technology systent.

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用于将钻杆钻入钻探面的改良型水平定向钻探组件的器械和方法。

An apparatus and method for a modified horizontal directional drilling assembly for drilling pipe into a drilling surface.

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分子育种就是定向、有目的地对农作物品种的遗传进行改良和修饰，更有效地培育植物新品种。

Molecular breeding is to breed new plant variety via improving or modifying genetic character of crop.

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