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Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Studying, analyzing and evaluating the basic factors affecting the wear resistance of the shear cutting drum, such as coal strength, the geometry of the cutting teeth, materials of cutting teeth, the cutting angle. Cutting depth, cutting feed and cutting speed are the basis for selecting the appropriate factors in fabrication, using the cutting teeth of the shearer.
Nội dung trích xuất từ tài liệu:
Summary of PhD thesis Mechanics gynamics engineering: Study on the effects of some factors on longevity of cutting teeth on the drum of shearer used in underground coal mining in Quang Ninh area
