凸缘为环形结构，凸缘贴合在桌子上表面或者下底面。
The annular flange closely contacts the upper surface or underside of the table.
此架车机在其支撑的下底面设置用以平衡意外水平力和具有耐挤压性能的弹性支撑垫。
The supported lower bottom of the car lifter is provided with an elastic support pad for balancing accident horizontal force, wherein the elastic support pad has extrusion-resistant performance.
这种显微技术采用棱镜波导耦合结构，在棱镜下底面依次镀有金属膜-波导层-样品层。
The structure consists of a coupling prism and 3-layer film coated on the bottom of prism in proper order.
对于水平直管段上底面及下底面各三个截面，测量了边界层内振荡流速的振幅分布及相位分布。
The velocity amplitude distributions of the oscillatory flow outside the boundary layer are measured at seven cross-sections along the horizontal, the vertical, and the bent sections respectively.
对引起缩松的原因进行了分析，并采取了相应的工艺措施，上下底面同时加冷铁，消除了缩松缺陷。
The reason causing shrinkage defect was analyzed, and the following measure was adopted: setting chills on both the top and bottom surfaces of the casting.
对引起缩松的原因进行了分析，并采取了相应的工艺措施，上下底面同时加冷铁，消除了缩松缺陷。
The reason causing shrinkage defect was analyzed, and the following measure was adopted: setting chills on both the top and bottom surfaces of the casting.
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