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1·The device adopted a five-dummy-plate four-post framework and the five dummy plates' center through holes formed the center datum of the framework;

装置采用五隔板四柱式刚性机架，且五隔板的中心通孔形成了机架的中心基准；

2·The device adopted a five-dummy-plate four-post framework.

装置采用五隔板四柱式机架。

3·It is ideal for sealing all the random gaps between dummy bar head and mould copper plate, to prevent the hot metal infiltration and break out while casting.

非常适合于引锭头与结晶器铜板之间无规则缝隙的密封，防止开浇时渗、漏钢的现象的出现。

4·After sealed by sealing rope, it is essentially solid-free with residue between dummy bar head and mould copper plate, no damage to the copper plate and easy to clean.

密封绳在开浇后与引锭头、铜板无粘结残留物，对铜板无损伤，易于清理。

5·In present paper, the form and mechanism of formation of out-of-plane distortion during bead-on-plate welding was studied by thermal clastic analysis with introduction of dummy element and experiment.

本文从引入虚元的热弹性板元有限元计算和试验测定两方面分析研究了平板堆焊时平面外变形的形态及产生机制。