The EJB specification is mature, yielding the benefit of well-known design patterns, case studies, and best practices, as well as a rich set of vendor-supported development tools.

Over bearing trees of last year showed the smaller number of the rosulate leaves and lower Percentage of fruit set than that of lower yielding trees.

After being set state load, optimized timbering adds support yielding deformation, increases the load-carrying ability and improves the effect of controlling the surrounding rock.