In view of the requirements of the verticality and parallelity in the process of equipping elevator for high building, a new laser collimating system is presented.
针对高层建筑电梯安装过程中导轨垂直度与平行度的要求，设计了一种新型的激光准直系统。
In view of the requirements of the verticality and parallelity in the process of equipping elevator for high building, a new laser collimating system is presented.
针对高层建筑电梯安装过程中导轨垂直度与平行度的要求，设计了一种新型的激光准直系统。
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