打开活门，让氮气进入减震支柱。
AA. Open valve to admit nitrogen to the drag strut.
BB. Open the valve and allow nitrogen to enter the oleo strut.
CC. Open the valve to let nitrogen go into the shock strut.
AA. Open valve to admit nitrogen to the drag strut.
BB. Open the valve and allow nitrogen to enter the oleo strut.
CC. Open the valve to let nitrogen go into the shock strut.