一个减震器中央棒包括一个中央孔是在空气流畅，空气压力耦合弹簧的悬挂系统的安装。
A central rod of the shock absorber includes a central bore that is fluidly coupled with air pressure within air springs of the suspension assembly.
隔板可以是实心的。或在其中央有一个孔。
The spacer ring can be solid or it can have a hole in the center.
本实用新型提供了一种配合使用的螺丝和螺丝刀，所述的螺丝包括开有一字槽的螺丝头和有螺纹的螺杆，在所述的一字槽中央有一定位孔；
The utility model provides a screw and a screw driver matching with it. The screw comprises a slotted screw head and a screwed screw bolt, and a positioning hole is arranged at the center of the slot.
一个用于连接刀片刀柄或类似物品孔钻了中央，稍微偏离中心。
A hole for attaching a blade hilt or similar item is drilled up the middle, slightly off centre.
利用通用的微电极夹持器在其抽吸负压的侧管上方钻一斜孔直通夹持器中央管腔。
An oblique hole through the glass pipette holder above the lateral hole for cell seal suction is drilled, through which a microcatheter o.
底座封闭于槽孔，其顶面中央设有供掣动件及抗扭弹簧套设的凸轴，并设有供以热熔性固着剂固定钢珠的穿孔；
The center of the braking piece is provided with the through hole which is sheathed on the convex shaft and the top face is provided with an upright shifting piece.
有时孔口应偏移，因此，他们不直接正对焊盘中央。
Sometimes aperture openings need to be offset so they are not centered directly over pads.
一摩擦片，叠置于衔铁上，中央具连轴块孔；
A friction plate with a hole for connecting piece of axle is superposed on the armature.
一摩擦片，叠置于衔铁上，中央具连轴块孔；
A friction plate with a hole for connecting piece of axle is superposed on the armature.
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