The radio frequency identify technique (RFID) and its applications were introduced in brief.

本文简要介绍了射频识别技术(RFID)及其应用范围。

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So, it's up on this screen here now, so we'll work on the other one. If you can identify which of these statements is correct based on what you know about the relationship between frequency and wavelength and also just looking at the waves.

它们之间的关系,现在在大屏幕上了,鉴于你们知道,频率和波长的关系,看到这些波你们来,判断下这些说法是否正确。

麻省理工公开课 - 化学原理课程节选

The Securities and Exchange Commission (SEC) today adopted a new rule establishing large trader reporting requirements, in an effort to improve their ability to identify high-frequency trading by large market participants.

FORBES: New Large Trader Rules Adopted; SEC Hopes To Better Monitor High-Frequency Trading

According to Capita, who dispute the phrase "lie detector test", "VRA analyses, in real time, changes in voice frequency" which are then assessed by "trained operators" to identify possible bogus claimants.

BBC: Councillor resigns over 'lie detector' fears