Clean each transducer foil with a clean paper towel - naphtha (lighter fluid) is a good cleaning agent - and apply a generous amount of superglue to each gold foil.

• 清洁每个传感器的金属箔和清洁纸巾-石脑油（打火机液）是一个很好的清洁剂-和运用了大量胶水每个金箔。