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TEACHING-AID DEVICE ON HYDRODYNAMIC LEVELLING
TEACHING-AID DEVICE ON HYDRODYNAMIC LEVELLING
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机译:水力分级教学设备
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摘要
the invention позвол ет improve обучени in a training device for hydraulic leveling. the device contains a hollow beams 3.напорный tank 5 and сообщающиес with hydrodynamic receptacles 8 with familia
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