查询词典 rod-shaped

This invention discloses a new technology for preparing rear earth ionic doped fiber prefabricated rods with DC-RTA technology in a sol-gel method including preparing sol containing necessary doped ions, coating said sol uniformly on the inner wall of the quartz glass tube and burning it under high temperature to coagulate and vitrify them to a doped layer and repeating the above process to form a fiber prefabricated rod by oxygen and hydrogen flame after the doped layer reaches to a designed thickness and the fiber prefabricated rod can be made to various rare earth ionic doped fibers by an ordinary drawbench technology.

本发明属于光纤制造和光纤激光技术领域，具体公开了一种利用溶胶凝胶方法中的DC-RTA技术制备稀土离子掺杂光纤预制棒的新工艺。该工艺步骤包括预先配制好含有所需掺杂离子的溶胶，将该溶胶均匀涂覆在石英玻璃管的内壁后高温灼烧，使之凝结并玻璃化为一层掺杂层。反复上述涂覆灼烧过程，在掺杂层达到设计厚度后由氢氧焰高温收棒形成光纤预制棒。该方法所得到的光纤预制棒可以通过普通拉丝工艺拉制成各类稀土离子掺杂光纤。

Two basic models of cancellous bone structure include the model of rod-rod structure and the model of framework of perforated plate.

由于骨量的减少和骨质的降低使骨组织机械强度减弱，骨折的易感性明显增高。

The dynamic strength of rod string and the mount position of centralizer were calculated,according to the acquired deformation of rod string and its impact contact force with tube in the time domain.

根据求得的时域内抽油杆柱受力变形值以及与油管柱碰撞接触力，计算了抽油杆柱动强度和扶正器安放位置。

Therefore, researching on the influence of effluent for vibration property of the sucker rod string has important reference value for rational configuration interval design of sucker rod centralizer, and also has important significant theoretical actual meaning on the simulation of the dynamic parameters and optimizing the running of polymer holes.

因此，研究聚驱抽油机井产出液对抽油杆柱振动特性的影响，对于指导扶正器配置间距设计、完善聚驱抽油机井动态参数仿真与运行优化技术都具有重要的理论和实际意义。

This paper discusses the work principle of elastic vibrating- rod sieve, and through the transformation of the existing circular sieve-shakers, illustrates the functions of elastic vibrating-rod sieve in the process of the fine screening of moist coal , and points out some existing problems and developing directions in the future.

论述了弹性振杆筛的工作原理，通过对现有圆振筛的改造，阐明了弹性振杆筛在解决湿煤细筛分过程中的作用，并指出了存在的问题及今后的努力方向。

A rod with noncircular cross section and a rod with circular cross section and intrinsic curvature are under investigation.

以非圆截面杆和有原始曲率的圆截面杆为研究对象。

The servo rod was constructed from 1/8 brass rod with clevis soldered to each end.

伺服杆建造从1 / 8 黄铜棒与clevis '焊接到每个月底。

Remove clevis pin and cotter pin on the rod coupling, then remove upper rod.

拆除连接套上的销轴和开口销，然后拆除上阀杆。

Place gasket seal on the lower barrel, install upper valve rod and rod coupling, fixed by clevis pin and

把密封垫圈放在地下埋管上，安装上阀杆和连接套，用销轴和开口销固定住。

The simulation results show that the rod baffles placed vertically and horizontally in the unit duct continuously shear and comminute the streamlines of the flow when the fluid crosses over the rod-baffles, change the fluid flow directions, and result in the disruption of the continuity and stability of the fluid. The disturbing flow can promote the fluid turbulent intensity and effectively enhance the heat transfer.

结果表明，纵横交错布置的折流杆在单元流道中不断分割和剪切流道内流体，其扰流作用促进了流体湍流，减薄了液体边界层，减小了对流换热热阻，因而有效地提高了流体的对流换热强度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。