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Ажиллах зарчим нь дараах дараалалтай: Материалууд нь аажмаар үндсэн хэсгийн тээрэмдэх тасалгаа руу орно. Эргэлтэн дэх төвөөс зугатаах х...... Шарикан нунтаглагч Шарикан нунтаглагч нь төрөл бүрийн уурхайн чулуулаг болон бусад төрлийн түүхий эдэд ашиглахад тохиромжтой.Уул уурхай барилгын материал...... Т130Х сайжруулсан нарийн …
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