coil-spring

coil-spring — noun

1. a piece of metal wire wound into a tight spiral that can be squeezed, stretched,

1.名詞B2
釋義

a piece of metal wire wound into a tight spiral that can be squeezed, stretched, or twisted and then returns to its original shape — used in car suspensions, mattresses, pens, and machinery to absorb force or store energy.

例句

The mechanic replaced the worn coil springs on the sedan's rear suspension.

coil spring + suspension (vehicle context)

Anong pressed the pen's button, and a tiny coil spring pushed out the ink tip.

tiny coil spring (compact mechanism context)

同義詞
  • helical spring

    more precise technical term emphasizing the helix geometry

  • spiral spring

    can refer to flat spiral springs, so less specific than coil spring

文法句型

coil spring + noun (suspension, mattress)

adjective + coil spring

用法筆記

Commonly written as two separate words (coil spring) in everyday use; the hyphenated form (coil-spring) appears more often in technical catalogues and engineering drawings.

常見錯誤

❌Every spring in a car is a coil spring.
✅Some cars use leaf springs or torsion bars instead of coil springs.
💡coil springs are one type of mechanical spring among several.
❌The coil-springed mattress was comfortable.
✅The coil-spring mattress was comfortable.
💡the compound itself acts as an adjective, so no -ed suffix is needed.