GB/T 39521-2020农业拖拉机和机械拖拉机和自走式机械的自动导航系统安全要求标准
英文:Tractors and machinery for agriculture—Auto-guidance systems for operator-controlled tractors and self-propelled mach...
英文:Tractors and machinery for agriculture—Auto-guidance systems for operator-controlled tractors and self-propelled mach...