求翻译：空间的定位和跟踪时RFID技术的重点。电子标签对物体的唯一识别性，读写器与标签之间射频通信的信号强度来测量物品的空间位置。主要应用于GPS难以奏效的室内定位领域。是什么意思？

Space positioning and tracking the focus of RFID technology. RFID unique identifier of the object, between the reader and the tag RF communication signal strength to measure the spatial location of items. Mainly used in indoor GPS positioning area to be ineffective.

The positioning and tracking when space RFID technical focus. electronic tags to the objects of the sole identification labels, readers and RF communication between the signal strength, to measure the space objects. Mainly used for indoor positioning area GPS is unlikely to be effective.

When spatial localization and track RFID technology key point.The electronic label to the object only recognition, between the reader-writer and the label the radio communication signal strength surveys the goods the space position.Mainly applies in the room which is effective with difficulty in GPS

Positioning and tracking of RFID technology the focus of space. RFID objects of unique identification, between reader and tag radio frequency communication signal strength to measure spatial placement of items of. Mainly used for indoor positioning of GPS to work areas.

When spatial localization and track RFID technology key point.The electronic label to the object only recognition, between the reader-writer and the label the radio communication signal strength surveys the goods the space position.Mainly applies in the room which is effective with difficulty in GPS