Steel rail has 3 rail base defects: bottom defect, scab and bottom crack.

钢轨轨底缺陷有三种：底伤、结疤和底裂缺陷。

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By contrast, research did find a strong linear relationship between code base size and static analysis defect count.

相反的，研究确实发现代码长度和静态分析漏洞数量的线形关系。

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Seam surface defect after grinding or thickness is lower than base material after mechanical treatment.

打磨焊缝表面缺陷或机械损伤后的厚度小于母材的厚度。

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In this room, which is impervious to outside radio signals, our test engineers connected the phones to our base-station emulator, a device that simulates carrier cell towers (seevideo: IPhone 4 Design Defect Confirmed).

FORBES: Consumer Reports Won��t Recommend New iPhone