(~s)
Thermoplastic materials are types of plastic which becomes soft when they are heated and hard when they cool down.
N-COUNT: usu N n
(~s)
Thermoplastic materials are types of plastic which becomes soft when they are heated and hard when they cool down.
N-COUNT: usu N n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012