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针规高精度塞规27.79 27.8 27.81 27.82 27.83 27.84 27.85mm
硬质钨钢球合金球27.785/27.79/27.795/27.8/27.805/27.81mm钢珠
精密针规销式塞规27.71/27.72/27.73/27.74/27.75/27.76/-27.79MM
英制骨架油封TC27.79/28.5/28.6*44.45/36.4/36.5*5.15/6.75/9.52
新款英制骨架油封TC27.79/28.5/28.6*44.45/36.4/36.5*5.15/6.75/
。针规高精度塞规27.79 27.8 27.81 27.82 27.83 27.84 27.85mm