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TEACHING-AID DEVICE FOR TRAINING OPERATION WITH HYDRAULIC GEODETIC LEVEL
TEACHING-AID DEVICE FOR TRAINING OPERATION WITH HYDRAULIC GEODETIC LEVEL
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机译:液压大地水准训练教学设备
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摘要
the invention относитс training devices and improve the teaching ability позвол ет device by изучени вли ни speed recovery жндкости sensor at the accuracy of измерени .with the inclusion двигател
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