树: tree杆: shaft; rod; bar穴: cave; cavern; grotto杆穴: fosse; pole hole; pole socket树杆: tree trunk生树杆: green pole水下树杆: submerged stumps桦树树杆: birch pole树杆制矿用梯子: monkey ladder树高: tree height树干蕈素: baletol树高比: tree height ratio树干周围用中耕机: round the trees cultivator; round the tress cultivator树高测定: hypsometrical measurement树干液流: sap flow树高的计算: tree height computation树干形状缺陷: defects of trunk shape
