Taking duplicate IDs for example, there are some hidden objects, which are not shown to users, but which are used for some functional purposes such as analytic scripts.
以重复ID为例，有些隐藏对象不会显示给用户，只是供分析脚本使用。
There are three main approaches: enhanced x-rays to spot hidden objects, sensor technology to sniff dangerous chemicals, and radio frequencies that can identify liquids and solids.
这种改进的技术包括下列三个步骤：利用增强的X射线显示出藏匿的物品、利用传感技术搜寻危险化学品，并利用无线射频技术识别液态和固态物质。
Geotechnical radar can be used widely in the inspection of hidden objects in civil engineering with great advantages in speed, efficiency, precision and resolution.
将地质雷达技术应用于土木工程检测，具有速度快、效率高、准确性及分辨率高的特点。
There are more and more applications of road-penetrating radar to geologic exploration, engineering quality detection, archaeology and detection of underground hidden objects.
探地雷达在地质勘探、工程质量检测、考古、地下隐蔽物的探测等方面的应用愈来愈广。
Icons for hidden objects appear dimmed, to distinguish them from objects that aren't defined as hidden.
隐藏对象的图标将呈灰色，以便与未定义为隐藏的对象区分开来。
A SOFTWARE upgrade to existing radar systems will allow aircraft to map landscapes and buildings in 3d, and make it easier to spot part-hidden objects on the ground.
通过现有的雷达系统的软件升级，可使飞机能绘制三维的地面风景和建筑物地图，并更容易辨认出地面上部分隐藏的目标。
A SOFTWARE upgrade to existing radar systems will allow aircraft to map landscapes and buildings in 3d, and make it easier to spot part-hidden objects on the ground.
通过现有的雷达系统的软件升级，可使飞机能绘制三维的地面风景和建筑物地图，并更容易辨认出地面上部分隐藏的目标。
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