The thin area has never become an empty hole, however.
臭氧稀薄区域从未变成一个空洞，无论如何。
B. Lateral rim of screw hole on CSBP is a weak area.
钉孔外侧缘是钢板薄弱和应力集中部位。
The arched hole is 2 to 10 percent of the damping piece in area.
所述拱形孔占减震片的面 积百分比为2-10％。
The arched hole is 2 to 10 percent of the damping piece in area.
所述拱形孔占减震片的面 积百分比为2-10％。
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