Wedge-shaped shelter-wood system的意思|示意

楔形伞状作业 ... 楔形穴植 Wedge-planting 楔形伞状作业 Wedge-shaped shelter-wood system 除草 Weeding ...

楔形伞伐作业方式 ... 囊形伞状扇头蜱 rhipicephalus bursa 楔形伞伐作业方式 wedge-shaped shelter-wood system 转向盆形伞齿轮 steering basin shaped bevel gear ...