Волокна и ткани в текстильной промышленности. Биева Е.Г. - 12 стр.

        Cotton has an excellent resistance to degradation by heat. It begins to turn yellow after
 several hours at 120 ºC and decompose markedly* at 150 ºC as a result of oxidation. Cotton
 burns readily in air.
        Cotton shows only a small loss of strength when stored carefully. Ancient samples of
 cotton fabric taken from the tombs more then 500 years old had 4/5 of strength of new material.
        There is a gradual loss of strength when cotton is exposed to sunlight, and the fibre turns
 yellow. Much of the damage is caused* by ultra-violet light and by the shorter waves of visible
 light. The cotton can be protected by using suitable dyes.

 Notes.


 seen at high magnification - видимая при большом увеличении
 under which it is produced - при которых он выращивается
 a buff colour    - цвет буйволовой кожи, темно-желтый
 results in       - приводит к
 markedly          - заметно
 is caused        - обусловлено


 Запомните следующие слова


 property; surface ; purpose, luster, smooth, to contain, colour, elastic (inelastic), per cent, to
 result in, to increase, strength, strong, to turn, to loose (lost, lost), loss, fabric, to take ( took,
 taken), light, to use, suitable, to begin (began,
  begun).


 I. Подберите в списках “a” и “б” слова с противоположным смыслом

а) wrinkled                                b) short
  to lighten                                  dry
  elastic                                     to darken
  to result in                                smooth
  increase                                    rigid
  saturated with water                         to cause
  ancient                                     decrease
  long                                        unvisible
  visible                                     new