传统营销的特征为单向的、外推的（push-oriented）、打搅的（interrupt-driven）， 且其内容是由品牌产出，非消费者产出的。
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向量外积的推导 Vector Cross Product
没有任何外延的推断 extensional consequences
带外罩的推力球轴承 Thrust ball bearing with band
运动补偿的外推插值法 motion compensation based extrapolation ; MC-E
外推的原因和结论都不清晰，分子表面张力也可能是渐进趋向于零。
It's not clear why this extrapolation was used or what conclusions can be drawn from it; the molecular surface tension could just as easily be asymptotic with respect to the zero point.
这是因为，按照线性拟合外推的结果仅仅适用于线型构型（均为反式）的碳链。
This is because the linear extrapolation only holds for a chain that adopts a linear (all-trans) configuration.
人们发现，类推学习有可能成为知识内推和外推的重要技术。
It is found that the methods of learning by analogy (LA) may become an important technology for the inter-and extrapolation of knowledge.
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