最佳答案:m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1.25。m8-7h螺距是1