1
[number] ohms
数字后通常用复数 ohms；作定语时可写成带连字符的单数，如 a 10-ohm resistor。
This speaker is rated at 8 ohms.
这款音箱的额定阻抗为8欧姆。
欧姆
ohms — plural of ohm
先理解核心含义，再看它在真实句子里的用法。
欧姆
a unit of electrical resistance
This speaker is rated at 8 ohms.
这款音箱的额定阻抗为8欧姆。
国际单位制中电阻的导出单位,当导体两端电压为1伏特、电流为1安培时,其电阻为1欧姆。
In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere.
This resistor has a resistance of ten ohms.
这个电阻器的电阻为十欧姆。
A typical speaker wire has very low resistance, often less than one ohm.
典型的扬声器线电阻很低，通常不到一欧姆。
You can measure the resistance in ohms with a multimeter.
你可以用万用表以欧姆为单位测量电阻。
数字后通常用复数 ohms；作定语时可写成带连字符的单数，如 a 10-ohm resistor。
This speaker is rated at 8 ohms.
这款音箱的额定阻抗为8欧姆。
in ohms 是表示单位的常用介词短语，ohms 用复数。
Electrical resistance is measured in ohms.
电阻以欧姆为单位计量。
该结构用于明确给出电阻值，of 后接具体数值和单位。
The cable has a resistance of 0.5 ohms.
这根电缆的电阻为0.5欧姆。
Not this
A ohm is a unit of electrical resistance.
Use this
An ohm is a unit of electrical resistance.
不定冠词要看发音而不是字母：ohm 以元音音素 /oʊ/ 开头，所以该用 an，不能用 a。
Not this
The resistance is 500 ohm.
Use this
The resistance is 500 ohms.
ohm 是可数计量单位，数字大于 1 时要用复数 ohms；汉语没有复数形式，容易漏加 -s。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
10欧姆电阻器
A 10-ohm resistor limits the current in this LED circuit.
10欧姆电阻器限制这个LED电路中的电流。
额定阻抗为8欧姆
These speakers are rated at 8 ohms.
这些扬声器的额定阻抗为8欧姆。
10欧姆的电阻
The cable has a resistance of 10 ohms.
这根电缆的电阻为10欧姆。
以欧姆为单位测量
Electrical resistance is measured in ohms.
电阻以欧姆为单位测量。
欧姆表
Use an ohm meter to check the resistance of the coil.
用欧姆表检查线圈的电阻。
Use ohms naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
谐音记忆：ohm 读作“欧姆”，欧姆定律定义了电阻单位，见到 ohm 就想到电阻。
语域：neutral 常见场景：physics lab、electronics workshop、circuit design 欧姆是电阻的标准单位，属于中性科技词汇，通常多用于物理、电子工程或电路相关的书面或技术说明中；日常口语里单独谈论这个单位的场合较少。
这些词都与 ohm /əʊm/ 押韵，尽管拼写不同：-ome (home, dome, tome)、-omb (comb)、-oam (loam, roam)。注意形近词可能发音不同：'om'（咒语）有时读 /ɒm/ 或 /oʊm/，而 'oh' 读 /əʊ/，没有结尾的 /m/。
Dictionary facts from ECDICT, WIKTIONARY.