In machine construction, couplings are used to effect a semipermanent connection between adjacent rotating shafts.
机械构件中，联轴器可以用来实现相邻两根旋转轴的半永久性联接。
Bearing: in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line relative to one another.
轴承：在机器结构中，允许被连接件彼此相对转动或作直线运动的连接器(通常为支撑物)。
Screw: In machine construction, a usually circular cylindrical member with a continuous spiral rib or thread, used either as a fastener or as a force and motion modifier.
螺纹件：机器结构中带连续螺旋肋的圆柱形件，用作紧固件或力和运动变换装置。
This system has low requirement to the machine construction, low cost, and is advantageous for the extension of agricultural robot.
对机械构造要求低、成本低，有利农业机器人的推广使用。
Furnace lines of various industrial furnace and heating equipment in metallurgy, machine, construction and material, petrol-chemical and ferrous metal industry.
冶金、机械、建材、石油化工、有色金属等行业各类工业炉、加热装置炉衬。
Furnace lines of various industrial furnace and heating equipment in metallurgy, machine, construction and material, petrol-chemical and ferrous metal industry.
冶金、机械、建材、石油化工、有色金属等行业各类工业炉、加热装置炉衬。
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