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單(dan)(dan)向軸(zhou)承是(shi)在一(yi)(yi)個(ge)(ge)方向上可以自(zi)由轉動，而在另(ling)一(yi)(yi)個(ge)(ge)方向上鎖死的(de)一(yi)(yi)種軸(zhou)承。單(dan)(dan)向軸(zhou)承也叫超越離合器，只是(shi)根據行業(ye)不(bu)(bu)同，作用不(bu)(bu)同來命名(ming)的(de)。


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