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低压 (dī yā) — (physics) low pressure; (electrical) low voltage; low tension; (meteorology) depression; low-pressure area

Definition

Means 'low pressure' across three fields: physics (low pressure), electricity (low voltage), and meteorology (a low-pressure weather system / depression). The meaning shifts with context — there is no single everyday 'pressure' word behind it.

noun
(physics) low pressure(electrical) low voltagelow tension(meteorology) depressionlow-pressure area

Examples

  • ，低压。
    Zài wù lǐ shí yàn zhōng, wǒ men xū yào cè liáng dī yā huán jìng xià de qì tǐ xíng wéi.
    In physics experiments, we need to measure gas behavior under low pressure.
  • 低压。
    Zhè zhǒng shè bèi zhǐ néng zài dī yā diàn lù zhōng shǐ yòng.
    This equipment can only be used in low-voltage circuits.
  • 低压。
    Qì xiàng tú xiǎn shì yí gè dī yā zhèng zài xiàng dōng bù yí dòng.
    The weather map shows a depression moving eastward.

Origin

Compound word
构词法gòucífǎ
偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

低dīlow
压yāpressure

低 means low and 压 is pressure or tension, together naming a low-pressure state.

Characters in this word

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
亻Written in full as人rénman, person
Sound part声符shēngfú
氐
氐dī低dī
Same sound today

In 低, the left side 亻 is a person, and the right side 氐 gives the sound; the image is a person lowering or bowing themselves.

Open 低 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 壓; 压 is its simplified writing.

Meaning part形符xíngfú
土土tǔdust
Sound part声符shēngfú
厭
厭yàn壓yā
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

The traditional form 壓 is built from 土, dust, and 厭, which gives the sound; 压 is the simplified form of 壓.

Open 压 →
Appears in
Physics & Chemistry

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