Provides no physical protection.

不提供任何物理防御.

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Many insurance companies and security firms offer free evaluation of the physical protection of computer installations.

很多保险公司和安全公司对电脑设施的机体保护提供免费鉴定.

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We ratified the Amendment to the Convention on the Physical Protection of Nuclear Material in 2008.

2008年,中国批准了《核材料实物保护公约》修订案.

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