Operate woodworking machines, such as power saws, jointers, mortisers and shapers, and use hand tools to cut, shape and form parts and components.
操作木工机器，例如电锯，开槽机，榫眼机和牛头刨床，并使用手工具切割，塑造和成型零部件。
2
Improved diaphragms containing asbestos fibres, jointers for jointing cathode elements to diaphragms, and process for obtaining diaphragms and jointers.