GB/T 4269.4-2014

Tractors, machinery for agriculture and forestry, powered lawn and garden equipment―Symbols for operator controls and other displays―Part 4: Symbols for forestry machinery

农林拖拉机和机械、草坪和园艺动力机械 操作者操纵机构和其他显示装置用符号 第4部分：林业机械用符号