Amazon SimpleDB (SDB) provides scalable, indexed, zero-maintenance storage, along with processing and querying for datasets.
AmazonSimpleDB (SDB)提供可伸缩、包含索引且无需维护的数据集存储，以及处理和查询功能。
With PaaS, organizations realize not only significant cost savings but also unique advantages such as automatic upgrades and zero maintenance.
使用PaaS，组织不仅节约了大量成本，而且还具备了诸如自动升级和零维护等独特优势。
And perhaps the most important "hassle-free" feature is full support for rolling upgrades-meaning zero downtime for maintenance.
最重要的“免麻烦”特性可能是完全支持滚动升级，这意味着不需要为了进行维护而停机。
The parallel blade damper is the ZD series damper. These dampers have been designed to provide long life, silent operation and require zero maintenance.
平行叶片风门是ZD系列风门。这些风门的设计使用寿命很长，运行安静，不需要进行维护。
Pure electric drive, zero release, low noise and more environmental construction. Overall swing-type tray is convenient for service and maintenance.
纯电力驱动，零排放，低噪音，施工更环保。整体旋出式托盘，方便检修维护。
Pure electric drive, zero release, low noise and more environmental construction. Overall swing-type tray is convenient for service and maintenance.
纯电力驱动，零排放，低噪音，施工更环保。整体旋出式托盘，方便检修维护。
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