In this paper, we propose a novel feature selection method based on concept extraction and shielded level.
本文提出了一种新的基于概念抽取和屏蔽层的特征选择方法。
On an individual level, people can help reduce much sky glow by using lighting only when necessary and by choosing well shielded lighting fixtures.
就个人而言，仅在必要时使用照明，且选择遮光性能好的照明设备，就能有助于大幅减少人工白昼现象。
The simple steel grid structurally supports the two level space, where only the bathroom and bed loft is shielded from the main living space.
简单的钢网格从结构上支持这个两层空间，只有浴室和阁楼卧室从主要生活空间遮蔽掉。
In the device driven level, it shielded the implement details of drive with the concept of device object and achieved the cross platform of the graphic system.
在设备驱动层中使用了设备对象概念，屏蔽了驱动的具体实现，从而实现了跨平台。
If the measured radiation level of a cell phone is high, consider using shielded accessories.
如果一个手机的辐射很高，应考虑使用屏蔽附件。
In order to improve the level of automatic welding in CO_2 shielded welding, the tracking system of welding seam based on arc sensor for CO_2 shielded welding is developed in this paper.
为了提高CO_2气体保护焊的自动化水平，本文研制了用于CO_2气体保护焊的电弧传感焊缝跟踪系统。
In order to improve the level of automatic welding in CO_2 shielded welding, the tracking system of welding seam based on arc sensor for CO_2 shielded welding is developed in this paper.
为了提高CO_2气体保护焊的自动化水平，本文研制了用于CO_2气体保护焊的电弧传感焊缝跟踪系统。
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