Returns the current generationnumber of the specified object.
传回指定物件的目前层代编号。
2
Returns the current generationnumber of the target of a specified weak reference.
返回指定弱引用的目标的当前代数。
3
Taking the entropy generationnumber of a multi-backpressure condenser as the target function, the optimum structure of a multi-backpressure condenser has been obtained.