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。
Improved diaphragms containing asbestos fibres, jointers for jointing cathode elements to diaphragms, and process for obtaining diaphragms and jointers.
改进含有石棉纤维的隔板，联接阴极部件与上述隔板的联接物，用于得到上述隔板和联接物的工艺。
Improved diaphragms containing asbestos fibres, jointers for jointing cathode elements to diaphragms, and process for obtaining diaphragms and jointers.
改进含有石棉纤维的隔板，联接阴极部件与上述隔板的联接物，用于得到上述隔板和联接物的工艺。
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