其原因是磁屏表面存在较大的切向拉应力，从而在酸洗过程中产生了应力腐蚀开裂。
The presence of the greater residual tensile stress induces the stress corrosion cracking in the course of the acid pickling.
它包括有磁扫描系统，厚窄缝，荧光屏以及CCD图像处理系统。
It consists of a magnetic scanning system, a thick slit, a fluorescent screen and a CCD image processing system.
它包括有磁扫描系统，厚窄缝，荧光屏以及CCD图像处理系统。
It consists of a magnetic scanning system, a thick slit, a fluorescent screen and a CCD image processing system.
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