And similarly old crystal radio sets and more recently modern radio frequency identification (RFID) tags, increasingly used in shipping and as antitheft devices, are powered purely by radiowaves.

同样，老式晶体管收音机，以及日益普及于航运及防盗装置上的，更新式的现代无线射频识别技术(RFID)，都是仅仅从无线电波中获取能量。

youdao

For example, shipping containers carrying auto parts for Volkswagen will be fitted with RFID tags.

比如，载有大众汽车部件的集装箱将贴有射频识别标签。

youdao

So far about 3, 000 shipping containers have been fitted with RFID tags.

至今，已有大约3000个集装箱贴上了射频识别标签。

youdao

Radio-frequency identification (RFID) tags used for tracking items like shipping containers and pallets of goods have been around for years.

ECONOMIST: Tech.view

Many large companies are keen to use the RFID tags because they will help keep track of the goods they are shipping from warehouses out to stores or regional offices.

BBC: NEWS | Technology | Viruses leap to smart radio tags