define drilling method
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drilling is the term used for the mechanized sowing of an agricultural crop. Traditionally, a seed drill used to consist of a hopper filled with seeds arranged above a series of tubes that can be set at selected distances from each other to allow optimum growth of the resulting plants.
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➡Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point.
➡The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute.
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