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| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Air Lubrication Systems |
|
12 | 1367 | October 6, 2022 |
| Paper "On the working principles of Energy Saving Devices" by Van Terwisga |
|
4 | 339 | July 18, 2022 |
| Energy saving devices |
|
5 | 317 | June 20, 2022 |