They need to guarantee service availability 24x7, even during weekly maintenance windows.

他们必须保证服务24x7可用，即使在每周的维护窗口运行的时候也一样。

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To guarantee life long high performance and low maintenance costs sunshade louvers, comprised of mill finish aluminum, are positioned on top of the roof structure.

为了保证遮阳百叶终生保持高性能和低维护成本，屋顶结构的顶部安装光面铝。

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The quantitative prediction and comprehensive appraisement of maneuverability of self-propelled gun have provided theoretic foundation for maintenance guarantee of weapon equipments.

定量预测和综合评价自行火炮的机动能力，为武器装备的维修保障提供了理论依据和手段。

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Although Luxor is a popular tourist destination and sees thousands of foreign visitors every year, there is no guarantee balloon pilots and other maintenance staff can speak English.

BBC: Luxor balloon survivor Linda Lea remembers ordeal