For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.
当焊缝区域
度变化超
透度计处度时，应在该处另加透度计。
For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.
当焊缝区域度变化超透度计处度时，应在该处另加透度计。
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