relative disease

丝锁气压计_馆档网 ... "主筋"," Reinforcing-bar" "实用病"," Relative disease" "相对林地"," Relative forest land" ...

...ease) 树病的涵意可分两大类，第一类是相对性 病害(relative disease)，例如生长异常、形态 变异，它必须有健康的标准相比 …