polyamides

polyamides — noun

1. a type of synthetic polymer whose long molecular chains are linked together by a

1.名詞C1
釋義

a type of synthetic polymer whose long molecular chains are linked together by amide bonds, valued for their strength, heat resistance, and durability in products such as nylon fibres, Kevlar protective fabrics, and engineered plastic components.

例句

Nylon and Kevlar are both polyamides, though they are used for very different purposes.

co-hyponym listing: nylon and Kevlar as examples of polyamides

The engineering team chose a heat-resistant polyamide for the car engine cover.

countable use: a polyamide (a specific type of polymer)

同義詞
  • nylon

    the most commercially important subclass of polyamides; often used loosely to mean any polyamide fibre, though technically nylon is one specific family within polyamides

  • synthetic polymer

    much broader category that includes polyamides along with polyesters, polyethylenes, etc.; less precise

文法句型

polyamide + verb (singular/plural agreement with context)

用法筆記

In scientific and industrial contexts, polyamide is commonly used as a count noun (a polyamide, several polyamides) when referring to specific types, and as a mass noun (polyamide is a versatile material) when referring to the class in general. The plural form polyamides often appears in general discussions of the polymer family.

常見錯誤

❌Polyamides has good tensile strength.
✅Polyamides have good tensile strength.
💡polyamides is a plural noun and takes a plural verb.
❌Polyamide are made from amide monomers.
✅Polyamides are made from amide monomers.' or ✅ 'Polyamide is made from amide monomers.
💡subject-verb agreement must match number.