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тооцооны туузан дамжуулагч iso 5048 xls. Туузан дамжуулагчийн тууз нь байнгын материалын ачааллын нөлөөнөөс ... iso 5048 1989 pdf. calculation belt conveyor iso 5048 xls ISO 5048 1989 Continuous mechanical handling equipment Belt conveyors with carrying idlers Calculation of operating power and tensile forc ...
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