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RF + noun
RF 作定语时表示“射频的”，通常大写。
RF signals can pass through walls.
射频信号可以穿过墙壁。
释放因子
先理解核心含义，再看它在真实句子里的用法。
释放因子
releasing factor
RF signals can pass through walls.
射频信号可以穿过墙壁。
射频；测距计
n a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland；n a radioactive transuranic element which has been synthesized；n a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
RF is widely used in remote controls and wireless microphones.
射频广泛用于遥控器和无线麦克风。
The router sends an RF signal that can pass through walls.
路由器发送一种能穿过墙壁的射频信号。
Engineers measure RF to check that a new device will not interfere with other equipment.
工程师测量射频，以确认新设备不会干扰其他设备。
RF 作定语时表示“射频的”，通常大写。
RF signals can pass through walls.
射频信号可以穿过墙壁。
用于解释缩写的含义。
RF stands for radio frequency.
RF 代表射频。
此义中 Rf 是化学元素符号，注意 R 大写、f 小写。
Rf is a radioactive transuranic element that has been synthesized.
Rf 是一种已合成的放射性超铀元素。
Not this
A RF signal is used for communication.
Use this
An RF signal is used for communication.
RF 读作 /ˌɑːrˈef/，以元音音素开头，因此前面要用 an，而不是按字母 R 的写法用 a。这个错误常见于汉语母语者，因为中文没有冠词，容易忽略读音决定冠词的规则。
Not this
RF is a synthetic element, so it has no stable isotopes.
Use this
Rf is a synthetic element, so it has no stable isotopes.
rutherfordium（𬬻）的化学符号是 Rf，即 R 大写、f 小写；RF 大写则通常表示 radio frequency（射频）。中文不区分大小写，所以学习者常混淆这两个写法，必须按化学符号的规范大小写使用。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
射频信号
The rf signal is too weak to detect.
射频信号太弱，无法检测。
射频放大器
This rf amplifier boosts the signal before transmission.
这个射频放大器在传输前放大信号。
射频干扰
The speaker emits rf interference that disrupts the radio.
扬声器发出射频干扰，干扰了收音机。
射频模块
The rf module connects the device to the wireless network.
射频模块将设备连接到无线网络。
射频电路
He designed an rf circuit for the antenna.
他为天线设计了一个射频电路。
射频辐射
Workers should be protected from rf radiation.
工人应受到保护，免受射频辐射。
Use RF naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
RF是Radio Frequency的缩写，想象收音机调台时接收射频信号的样子，记住'射频'。
语域：formal 常见场景：技术文档、学术论文、专业报告 rf 是缩写，通常用于技术或学术类书面语境；如果指“射频”，多出现在通信、电子工程等专业领域，日常口语中较少单独使用。
这些词都以 -rf 结尾，但拼写相同不代表发音相同。缩略词 rf 通常读作两个字母 R-F /ˌɑːrˈɛf/，因此与它们都不押韵。其中 surf、turf、serf 押韵，读 /ɜːrf/；dwarf、wharf 押韵，读 /ɔːrf/；scarf 读 /skɑːrf/，不与其他词押韵。
Dictionary facts from ECDICT, WIKTIONARY.