如果对象流程被使用的话，这些活动参数节点就将被使用。
These activity parameter nodes would be used if object flows were used.
活动参数节点(在活动的左边和右边)并没有得到使用。
The activity parameter nodes (on the left and right edges of the activity) are not used.
相反，活动的参数节点(必须同其规范操作的参数相一致)根据需要被直接引用到输入和输出插口上。
Instead, the parameters of the activity (which must correspond to the parameters of its specification operation) are referenced directly on input and output pins where needed.
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