powderless etching

例句：

1. 1. The artist used a powderless etching technique to create this intricate design.
   这位艺术家使用了无粉末蚀刻技术来创作这个复杂的设计。
2. 2.The museum has an exhibit featuring powderless etchings by contemporary artists.
   博物馆有一个展览，展出当代艺术家的无粉末蚀刻作品。
3. 3.The engraving is so detailed that it almost looks like it was made with powderless etching.
   这个雕刻非常精细，几乎看起来像是用无粉末蚀刻制作的。