Preliminary test to Experts on plastic material engineering

sontime

   Preliminary test to Experts on plastic material engineering :
" `; v0 a' \' j6 A4 w& t  This was a part of  enterance examination of material engineering for Doctors, I have had a look at them, and believed that you can not answer these questions unless you are a very professional and have wide range of academic knowledge on plastic engineering, should you even get any answer, please let's share them with you!!
& }  s( t4 i+ t! x
6 t4 }  o! T6 ]$ ]/ d$ I" O4 j
; w9 R9 N* ?, m3 H# Y7 r  h4 z[ 本帖最后由 sontime 于 2007-1-17 10:09 编辑 ]

crada

I am not a expert on plastic material engineering, but I wanna you enclose the answers as well. I need them. thanks in advance!