Mechanical explosive bow technology has been around for centuries. The first known design for a mechanical explosive bow was created by the Greek scientist Archimedes in the third century BC. However, the technology was not widely used until the Middle Ages,...
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Needle Gauge For Blood Donation
When donating blood, a needle gauge is inserted into a vein to extract blood. The gauge is a device that measures the size of the needle. It is important to use the correct gauge when donating blood, as using a gauge...
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