A weak law of large numbers for the weighted sums of non-identically distributed NA random matrix sequences is studied.
研究了不同分布NA序列加权和最大值的弱大数定律，推广了前人的结果。
Changli golden coast natural reserve has many problems, such as land ownership, the contradiction between resource conservation and land development, lack of capital and weak law enforcement.
昌黎黄金海岸自然保护区存在着土地权属、资源保护与开发矛盾、经费不足和管理执法力量薄弱等诸多现实问题。
Weak law enforcement is the main problem.
执法能力薄弱是主要问题。
Weak law enforcement is the main problem.
执法能力薄弱是主要问题。
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