autotype paper

基本解释

The carbon in the past, be add on paper face have autotype a material of the function, common front opposite has, so, two sides can be used.
过去的复写纸，是在纸面上加上具有复写功能的一层材料，一般正面反面都有，所以，两面都能使用。
There also is a tu yi layer later so as carbon must expect tu youcai that is gadarene can write on ground floor paper so when below same handwriting also can appear on a paper finish autotype the job.
后来也有只涂一层的，所以，作为复写纸，必须将涂有材料的那层朝下，这样就能在第一层纸上写字时，下面一层纸上也能出现同样的字迹，完成复写工作。