... directional cloning 定向克隆 direction selectivity 方向选择性 direct repeat（DR） 同向重复（序列） ...
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Since the work of Hubel and Wiesel, it is generally accepted that visual orientation and direction selectivity are achieved by processes in the visual cortex in the higher mammals.
视觉方位、方向选择性曾被认为是高等哺乳动物视皮层细胞的特有功能。
Further more, we give an explanation of the intrinsic implication of the present method and our comprehension about directional orientational selectivity and preferred direction orientation.
本文对此方法的内在含义作出了解释，并提出了对方向、取向选择性及最优方向、取向的理解。
Most of the researches of selectivity of fishing gear ignored the between-haul Variation which is caused by uncontrolled factors such as the depth of water, direction and velocity of wind and current.
传统渔具选择性研究大多忽略了非可控因素(如水深、风流等)造成的网次间差异。
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