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6 Construction Working and Maintenance of Electric Vibrators and Vibrating Screens A drive consisting two unbalance motors rotating in opposite directions generates a linear straight line vibratory movement This

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Ship construction today is a complicated compound of art and science In the great days of sail vessels were designed and built on the basis of practical experience; ship construction was predominantly a skill With the rapid growth and development of the physical sciences beginning in the early 19th century it was inevitable that hydrokinetics the study of fluids in motion hydrostatics

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Constructional engineering is becoming the key industry in the national economy But construction enterprises are lagging far behind those industrial enterprises with refined management and computer integrated manufacturing system Operations research is mainly concerned with management problems and involves the construction of mathematical models and the application of mathematical tools and

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Introduction The unit cost of logging or road construction is essentially derived by dividing cost by production In its simplest case if you rented a tractor with operator for $60 per hour including all fuel and other costs and you excavated 100 cubic meters per hour your unit cost for excavation would be $ per cubic meter

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Objective pair of numerical values for the variables M and Y is a produc tion plan For example M 10 000 and Y 20 000 means we make 10 000 packages of Meaties and 20 000 packages of Yummies each month But how do we know whether this is

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