1The action of covering or coating something with tin.
镀锡，包锡
the board is then ready for drilling and tinning
Example sentencesExamples
Original tinning is steely grey in colour and if it is in good condition, it counts as a plus point when considering the value of the item.
Most of the original tinning has been scrubbed away with years of use, but you can see the original red enamel around the logo, and the handle is still bright red, just like a Spong handle should be.
About half the applied decoration is champlevé enamel and a further third tinning, a thin coating of a tin-rich alloy covering some or all of the brooch's surface (often erroneously described as silvering).
Additionally, his support of the Homestead Act and the Morrill Land Grant College Act made it easier for farmers to obtain land and further their agricultural tinning.