Preliminary Analysis of Atmospheric Effect on Laser Alignment in Using the Zone Plate 波带板激光准直中折光影响的初析
Preliminary study on the distal femur rotational alignment 股骨远端旋转对线的初步研究
Preliminary Experiment on Beam-Based Alignment 基于束流的准直的初步实验研究
A preliminary scheme is proposed for the transit tunnels of Xi 'an Metro to pass through a zone with ground cracks, including the tunnel structure, waterproofing, roadbed and the route alignment design. 根据西安地裂缝变化运动特点,提出西安地铁区间隧道通过地裂缝带的结构、防水、道床及线路设计的初步方案。