IPC-A-610D Chinese.pdf - 第63页
90˚ <90˚ >90˚ θ θ θ >90˚ θ A B CD 5-1 5-1 IPC-A-610D
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90˚
<90˚
>90˚
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θ
θ
>90˚
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5-1
5-1IPC-A-610D
5-2 IPC-A-610D
90˚ <90˚ >90˚ θ θ θ >90˚ θ A B CD 5-1 5-1 IPC-A-610D