The fastest-growing data is archive data, which is ideal for cloud storage given a number of factors, including cost, frequency of access, protection, and availability.

增长速度最快的数据是归档数据，鉴于很多因素它是云存储的理想之选，这些因素包括成本、访问频率、保护和可用性。

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Channel (also called a distribution channel or sales channel) : Product availability, feature availability, security, customer support, frequency and kinds of marketing communications, etc.

渠道(也叫分销渠道或销售渠道)：产品的有效性，特征的有效性，安全，客户支持，频繁的各类市场交流，等等。

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A software based frequency tracking algorithm for protective relaying is analyzed thoroughly. in this paper, the availability of this algorithm under the non-noise condition is proved.

全面分析了一种保护用软件频率跟踪算法的性能，论证了在无噪声干扰的情况下该算法的有效性。

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Continuing to reduce the costs of on-line storage will require the management of stored content to optimize availability depending upon frequency of use and use of commodity storage and other data center equipment.

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