We've focused on the best sewing machines for beginners and tested models from Brother, Janome, Singer, John Lewis and more, including budget options costing less than £100. We enlisted the help of ...
For much of the nineteenth century, inventors submitted a model with their patent application to the United States Patent Office. The National Museum of American History’s patent model collection ...
Abstract: The increase in production numbers from 2020 to 2021 causes work fatigue experienced by the workforce and results in decreased performance and increased work errors. The aims of this ...
Abstract: It is very important to obtain bore stress state accurately for the study of barrel life and launching safety. A thermal-mechanical coupling model of large caliber gun barrel considering ...
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