使白

Week 12 Spin of electron, forth quantum number, description of hydrogen atom with quantum mechanics, Pauli exclusion principle, shell distribution of electrons out of atomic nucleus.

第12周电子的自旋-第四个量子数；氢原子的量子力学描述；泡利不相容原理；元素原子核外电子的壳层分布。

The original poster you this API became old an overhaul changed this year January: Activity and ExternalActivity changed with ExternalActivityBehaviour Node changed ActivityBehaviour Activity looks in me, jbpm4 and Jbpm3 do not have what relation, the design that the kernel rescripted basically and is based on Pvm has very strong expansibility.

楼主你这个API老了今年一月份有个大修改：Activity 和 ExternalActivity 改成了ActivityBehaviour和ExternalActivityBehaviour而Node改成了Activity在我看来，jbpm4和jbpm3没啥关系，内核基本都重写了而基于pvm的设计有很强的扩展性。