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DIY Bird Feeder Using PVC Pipe: Perfect for Small BirdsHere’s how you can do it. Before you get started, gather the following supplies: Take a piece of 4-inch Schedule 40 PVC pipe and cut it to your desired length. This will be the main body of your bird ...
In the present work, an effort is made to demonstrate the displacement sensing capability of polyvinylidene difluoride film attached to a mechanical structure. A prototype of a swing check valve has ...
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