1) vital tree
骨干树种
1.
We had made tree census for twice to go to Chang Zhou city ,He Bei Provinee Whose soil is serious saline and alkaline The trees we had investigated amount tomore than 1300 trees They belong to 21 fanilies ,47 genuses ,we had analized the investigated conclusion So we had selected the capital trees and the vital trees in deiverse green surface according to the natural environment of the cit
分析调查结果，并据沧州市的自然概况，选择沧州市的基调树种和各类型绿地的骨干树种。
2) backbone tree
骨干树
1.
It constructs a backbone tree rooted from the sink to guarantee connectivity between sink and sensing nodes.
该算法构造以sink为根的骨干树保证信息采集节点和sink的连通性。
4) Tree-backbone
树形骨干网
5) Tree backbone network
树状骨干网
6) Freeze-drying xenograft bone
冻干异种骨
补充资料：骨干
①长骨的中央部分，两端跟骨骺相连，里面是空腔。（图见〖骨头〗）②比喻在总体中起主要作用的人或事物：～分子丨～企业丨业务～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条