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以图1所示形式曲轴为研究对象。设OO'为主轴中心轴线,NN'为曲柄销中心轴线,d表示主轴颈直径及曲柄销的直径。
Crankshaft in the form shown in Figure 1 as the research object. Let OO ’be the central axis of the main shaft, NN’ be the central axis of the crank pin, and d represents the diameter of the main journal and the diameter of the crankpin.