Returns the current generation number of the specified object.
传回指定物件的目前层代编号。
Returns the current generation number of the target of a specified weak reference.
返回指定弱引用的目标的当前代数。
Taking the entropy generation number of a multi-backpressure condenser as the target function, the optimum structure of a multi-backpressure condenser has been obtained.
以多背压凝汽器的熵产生数为目标函数,得出了多背压凝汽器的最优结构。
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