1. 根端的解释
1. butt end：刚性模量 rigidity modules | 根端 butt end | 根段材 first log;butt log
2. standing end：力端 running end | 根端 standing end | 定滑车 fixed block
3. Butt：百舌鸟 Butcher-bird | 根端 Butt | 根段材 Butt log
4. root apex;root tip：根苗复合体 root and shoot complex | 根端 root apex;root tip | 根端 root apice;root apex; root tip