复数： etchings

Each etching is for each print .

一个蚀刻图案对应一颗印章。

Etching , polishing and painting processes can release dangerous dust and chemicals including cyanide and arsenic .

蚀刻、抛光和烤漆流程可能释放出有害粉尘以及氰化物、砷等化学物质。

The team started by etching thin layers of brass on plastic film , which could be sewed onto a fabric .

研究团队首先在塑料胶卷上蚀刻多层薄的黄铜，这些塑料胶卷能够被缝合在布料上。

The stamps themselves are made by etching silicon wafers using the technique that makes microprocessors , and the sheets can be shaped to coat anything from cars to portable electronic devices .

这些贴片自身是由蚀刻硅片制成，而硅片用到了制造微处理器时所使用的技术，可以做成各种形状覆盖到从小汽车到便携电子设备的任何产品上。

One company selling hydrochloric acid for etching cement floors reckoned that , because it was in gel form and could legally be washed down the drain , the product was environmentally friendly .

一家销售蚀刻水泥地盐酸的公司以为盐酸为胶液产品，可以被合法地冲进下水道，因此是环保产品。