在一般情况下,( )是影响塑件尺寸和精度的主要原因。
A. 塑料收缩率波动
B. 成型零件的磨损
C. 成型零件的制造公差
D. 以上全是
to / and / university / welcome / well / for / getting / done / here / a / place
with / challenges / number / be / faced / you’ll / a / of
your / want / to / you / believe / or / really / be / enjoy / lectures / it / not / professors / interested in / and / their