Virtualization might have flawed mechanisms for tapping that entropy source, or hav-ing several VMEs on the same host might exhaust the available entropy, leading to weak random number generation.

虚拟化可能在利用这样的信息源上存在缺陷，或者说在同一台主机上容纳多个虚拟机运行环境可能会穷尽可用的信息源，导致薄弱的随机数生成机制。

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Firstly, this paper analyzes the current analog signal random testing technology, and describes using entropy measure is more accurate and scientific to estimate the randomicity of signal by contrast.

本文首先分析了当前模拟信号随机性测试技术，通过比较，说明使用熵测度对信号的随机性进行评价更加准确与科学。

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The network structure entropy of random graph and scale-free network is compared through the example of world trade web.

以世界贸易网为实例，比较了随机网络与非标度网络的网络结构熵。

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