晶胞
参考答案:
任何晶体都对应一种布拉菲格子,因此任何晶体都可划分出与此种布拉菲格子平行六面体相对应的部分,这一部分晶体就称为晶胞。晶胞是能够反映晶体结构特征的最小单位。
根据内容,补全对话。
A: 1_____ me, is 2_____ a post office near here?
B: 3_____. I don't know. Let's ask Mr. Wang. Mr. Wang, 4___ _ is the post office?
C: Oh, it's very far 5_____ here, but you can 6_____ a taxi.
A: Oh, no,1 want to go there on foot.
C: OK, let me tell you the way. Go down this street and 7_____ left, it's down Bridge
Street 8____ the right. It's across 9 a big hotel.
A: 10_____.
C: You are welcome.
一圈汽封块之间的总膨胀间隙一般留0.5mm左右。