Compared with the acid erosion, the copper plate engraving is nontoxic and can help to protect the environment. 铜版干刻技法,首先是它较之酸蚀的无毒,带来了环保的结果。
The groups conditioned with 10% polyacrylic acid showed significantly lower shear bond strength value, and the unconditioned groups had the lowest bondstrengths. 对于每一种酸蚀剂,无论在干燥环境和水污染环境下粘接时未见报道有显著不同。