We made the ice, we can see a bit here, a sort of growth on the edge of the window. The ice is bathed in ultra-violet light, simulating solar radiation, which breaks up the molecules.我们制作了冰，我们可以看到，在窗户的边缘生长着一种东西。冰沐浴在紫外线中，模拟太阳辐射分解分子。This ...
The bars are used to anchor inserts, anchors, or post-tensioning tendons into concrete to prevent the concrete from "blowing out" at a free edge. The name hairpin refers to the similarity in appearance and function to the pins used to hold one's hair in place. Upvote 0 Down...
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A common analogy explains such domination, as one could imagine a train heading south at 60 miles per hour, while its first car houses a runner who speeds northward toward the back car at 6 miles per hour; the power of the southern train always wins, as does the wrap over the helix. ...