文档介绍：several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measuremendesign value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
实用文档
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
同样的，对应欲望的体系划分，我们将欲望实现的满足感——效用也分成两个层次：一是从游戏外部来看，获得游戏时间的效用；二是从游戏内部来看，获得虚拟物品或产生虚拟现象的效用。这两个层次的效用既有联系又有区别。联系在于，无论怎么划分，效用最终都体现在同一个人身上——那个参与游戏并操作游戏中角色的消费者，并且第一层次的效用是第二层次效用实现的基础，第二层次的效用实现又会刺激第一层次的欲望实现要求。没有人会不花费一点游戏时间就获得自己心仪的虚拟物品——就算是别人帮你代打，你总要登陆游戏吧；也没有人在获得了心仪的虚拟物品后就立刻放弃游戏放弃自己的展示机会。两个层次效用的区别在于，第一个层次的效用是获得了一种娱乐方式的满足感，它的可替代性很强，但就这个层次来看，完全可以用 体育 运动、卡拉OK等其他娱乐方式来代替网络游戏时间；而第二个层次的效用是获得一种指定“物品”的满足感，它居于游戏内部，可替