名词
中文翻译：指向性指数
同义词：
['directional index', 'directivity index', 'directionality index']
例句：
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1. Thenew design has a high directivity index, which makes it easy to navigate.
新设计具有高指向性指数，这使得它易于导航。
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2. The company's marketing strategy is highly directed towards the target audience.
公司的营销策略非常针对目标受众。
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3.In order to improve the efficiency of the project, we need to analyze the directivity index of the data.
为了提高项目的效率，我们需要分析数据的方向性指数。