连接板(40)的自由端设有垂直于该连接板的折边(50)。
The free end of the connecting plate (40) is arranged wit a flanging (50) which is perpendicular to the connecting plate.
连接板(40)的自由端设有垂直于该连接板的折边(50)。
The free end of the connecting plate (40) is arranged wit a flanging (50) which is perpendicular to the connecting plate.
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