It is proved that the weak type estimate is sharp.

其弱有界性估计是精确的。

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Its main categories fall into the following types: Strong-Weak-Weak type, Strong-Strong-Weak type and Strong-Strong-Strong type.

其主要类型有：“强弱弱”权力结构、“强强弱”权力结构和“强强强”权力结构。

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The authors give the two-weight weak-type inequality for the rough fractional integral operator, which is an extension of result obtained by Cruz-Uribe and Perez.

作者得到了粗糙核分数次积分算子的两权弱型不等式，推广了Cruz-Uribe和Perez的结果。

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And in fact, under type checking, different languages sometimes fall on a spectrum from weak to strong typing.

实际上，在类型检查的下面，不同的语言会对应着,从弱到强的一个定型范围。

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