What does the film classification U means?
电影等级中的U是什么意思?
Entropy, as a measure of uncertainty, can be used to describe the classification on approximation space (u, r).
熵作为对不确定性的一种度量,可用于描述近似空间(U, R)中对象的分类情况。
After implementing a rescission, the FDA prohibits the manufacturer from further U. S. marketing until the agency approves or clears a new marketing application, or grants a classification petition.
废除令实施后,在FDA批准或撤销一种新的市场应用,或批准新的分类申请之前,制造商仍不得在美国进行进一步的市场推广。
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