| 摘要 |
A dampening water regulating scale P includes first detecting patches PY1, PM1, PC1 and PK1, and second detecting patches PY2, PM2, PC2 and PK2. The first detecting patches PY1, PM1, PC1 and PK1 are formed of line patches having the number of lines at 400 lines per inch and a duty ratio at 67%. The second detecting patches PY2, PM2, PC2 and PK2 are formed of dot patches having the number of lines at 150 and a dot percentage at 80%.
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