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.
当焊缝区域底片黑度变化超过透度计处黑度时，应在该处另加透度计。
| 单词 | film density |
| 释义 |
film density
英语例句库
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. 当焊缝区域底片黑度变化超过透度计处黑度时，应在该处另加透度计。 |
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