当被透工件厚度差较大时,就会有“边蚀散射”发生。
参考答案:对
The poor old beggar looked forward to _____ by the other beggars.
A.not playing a trick on
B.not being played a trick on
C.playing not a trick
D.being not played a trick
"每天"的外文缩写是
A.n
B.g
C.d
D.h
E.d