当使用导航软件的手机长时间使用时间，如当你说话到手机上，充电电池，浏览网页，或者该设备可能会变得温暖。
When using your phone for prolonged periods of time, such as when you're talking to the phone, charging the battery, browsing the web or using navigating software, the device may become warm.
飞机上的一种无线电导航设备，通过测量电波往返飞机和预选地面（DME）台之间所需要的时间来确定两者间的距离。
A radio navigational aid for determining the distance from a selected DME ground station by measuring the time of transmission to and from it.
其中也包括了在飞机上使用的紧固器、飞弹导航电子设备。 防弹衣原材料和引擎装置。
The parts include fasteners used on aircraft, missile guidance electronics, materials used in body armor and engine mounts.
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