abbr.orbit-to-orbit shuttle 轨道-轨道航天飞机，轨道间航天飞机，orbit-to-orbit stage 轨道间驿站，out of stock 卖光了饿
The DS 1 remains OOS while the loopback is performed.
在执行回环期间,DS1会一直保持OOS状态.
To perform the loopback, the DS 1 must be in the OOS state.
要执行回环, DS1就必须处于OOS状态.
A full - scale OOS investigation may include additional laboratory testing.
一个全面的OOS调查可能包括附加的实验室检验.
汉字吧hanzi8.com