zhang117723
花朵
共回答了23个问题采纳率:91.3% 举报
Materials are everywhere around us,plastics has been widely used among all materials.Plastics has became the favourite in the twenty-first century since it has been used in a variety of industries.Though the plastics has made harm to the environment,the function is non-neglected and irreplaceable because plastic has prenominent capability.Now I'd like to make a brief intorudction on the definition,speciality,range of use,history and the development of new type plastic.Below is the classified elaboration on plastics.
key word,plastic,the definition of plastics,the classification of plastics,the speciality of plastics,degradative plastics,conductive plastics,plastics optical fibre.
纯手译,供参考
1年前
7