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.
過去的複寫紙，是在紙麪上加上具有複寫功能的一層材料，一般正麪反麪都有，所以，兩麪都能使用。
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.
後來也有衹塗一層的，所以，作爲複寫紙，必須將塗有材料的那層朝下，這樣就能在第一層紙上寫字時，下麪一層紙上也能出現同樣的字跡，完成複寫工作。