坩锅底部采用了导热性良好的陶瓷棒作支座，以增强晶体中心部位的散热。
A ceramic rod with favorable heat conductivity is arranged on the bottom of a crucible to be used as a support seat to enhance the heat dissipation of the central position of crystal.
船舶在波浪中航行时，船体总弯曲变形会使沿船体纵向布置齿轮机构的轴承支座中心距产生缩减。
When sailing in waves, ship hull total bending deformation will reduce the center distance of gear backing radially arranged in ship hull.
水平烟管采用弹簧吊、中心滚动支座，可减少管道热膨胀移动时的摩擦阻力；
A horizontal smoke pipe adopts a spring suspender and a central roller support, and the friction resistance generated by the thermal expansion the pipe when moving is reduced.
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