油压 (yóu yā) — oil pressure | tongtong Chinese Dictionary

Definition

noun

oil pressure

油压，。
Fā dòng jī de yóu yā guò dī shí, yí biǎo pán huì liàng qǐ jǐng shì dēng.
When the engine oil pressure is too low, a warning light will illuminate on the dashboard.
油压。
Jì shī yòng yā lì biǎo cè liáng le yè yā xì tǒng de yóu yā.
The technician used a pressure gauge to measure the oil pressure of the hydraulic system.
油压。
Dìng qī jiǎn chá yóu yā kě yǐ yán cháng fā dòng jī de shǐ yòng shòu mìng.
Regularly checking oil pressure can extend the service life of the engine.

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.

压yāpressure

油 gives oil and 压 gives pressure, so it names the pressure of oil.

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.

氵由油

Meaning part形符xíngfú

氵Written in full as水shuǐwater

Sound part声符shēngfú

由

Same sound today

油 is built from 氵, a water part, and 由, which supplies the sound.

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.

厭土壓

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.