这些照片都是在邮寄时被折叠和压扁的。
这个压扁的符号让誊写者用单笔划结束书信。
The compressed symbol allowed the transcriber to complete the letter in a single stroke.
采用影响函数法推导了薄板轧制时变形区内轧辊弹性压扁的计算式。
A calculation method of the flattening in sheet rolling deformation zone, using influence function, was derived.
Why didn't the guys in the middle get crushed?
为什么中间的几排人没给压扁呢
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