If you focus on the fact that the most interesting apps are *connected* apps, and that the dynamics of network economies are still in play, you see this less as a replacement and more as an evolution.
如果你关注这个事实：最有趣的应用都是 “互联”应用，而且万维网经济的动态性仍在起作用，你会将这一切更多地看做是进化而非取代。
As a replacement of valve number 1 with Red valve's Type a and pneumatic fail-safe system 700, valve number 3 has accomplished an improvement in the fluid dynamics of the system.
作为1号阀的替代品，美国红阀公司A型夹管阀和无故障气动系统700，也就是左图中的3号阀，极大地改善了流体介质的流动性。
Trees replacement patterns could be classified into 4 groups according to quantitative dynamics of seedlings, saplings and trees in different gap stages.
依据树木幼苗、幼树和林冠层数量的差异，可将林隙树种的更新模式分为4种类型。
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