aaٲ 0.2cm
ҹ10% ѧΪ߶Ƚ,Ԥ?...
ӾܿʼѸǿ۾Ѵӿɷֱʱ0.1-0.2ߵ3ʱ0.9ıˣ
һƬijߴǶ
һƬǴСΪ1Ӣ磨25ס35ףñյƬһ֤֤ѧ֤ļеıʽļͨҪʹ...
ܰԤ?
4ο,ʱĵ2,ǻȫ,,ݵ,ƾᶨ־,ɹ!
һ?ӿԺͰü?ӿԺͰü...
áӪҪԼעʳ˳ʳû컹ԡҪٳ
ٲȻٲȻʲô˼
ٲȻ:.ٲȻ:..Ȼ:..һԴǡ
е..е.ٲȻ.
ʱ,еͬѧ,˼ڤ벻,еͬѧٲȻץ,˼.
...B.ʽ(jn)Ȼ(hu)(zhu)C.ٲȻ(yn...
1. []CٲӦyn
˽Ŀ֪ʶЩ?
1.(Brazil)֪Կ:ɽʿ/ʥ˹(Santos)ΪȲܲһԼռȫܲ1/3Ҫؼв...
ںʲô?
֪AAƺɷԴںˣߵĺ90%ĬAAģҾҲãѵĹϵΪƻ...
¶ʮһȫѼŷҼҾ,û뵽ͷ ...
ʵľϵذ峣Զ㽺ϰΪ,װӲľƬѹ,ͨ0.2-0.8mm֮䡣 ǾĴСһ,Ҳɹ,ѡýɫʡ...