Starfire’s answer: Shoot a laser 56 miles into themesosphere and measure the distortion. Then adjust the laser’smirrors until the beam is back in focus.
星火的回答是：射出去6英里远的激光到大气中间层，测量失真，然后调整激光的反射镜直到光束背对焦点。
2
When the door frame is seriously distorted, the main beam, the supporting legs, the lower beam, the trolley and the connecting piece of the frame can bear large distortion stress.
在门架严重扭曲时的主梁、支腿、下横梁、台车及他们之间的连接件均会承受很大的扭曲应力。
3
The tolerance of the BOE to the phase distortion with Gauss distribution of the input laser beam and the manufacturing error are analyzed.