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东风-12型手扶拖拉机在需要更换Ⅰ/倒档齿轮时,绝大多数机手或修理工总是按下述繁杂的工序进行操作:拆下操纵手把,打开变速箱盖,......

Knowing axial ultimate bearing capacity of a structure is essential forconstruction of building, bridges and other huge ......

中小型飞机缓冲器全伸长长度测量采用卡尺测量,测量长度不超过800mm。而新型飞机起落架缓冲器根据设计需要三组缓冲器连成一体,同......

拆卸修理农用三轮车变速箱时,要注意场地清洁,准备好必要的工具和配件....