太空发射系统
- 网络Space Launch System;sls
太空发射系统-
NASA也已经开始建造一款重型火箭，名为太空发射系统（SpaceLaunchSystem），它将在以后的发射任务中搭载猎户座。
NASA also started work on a heavy-lift rocket known as the Space Launch System that will carry Orion on future launchings .
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预算中的6.51亿美元将用于支持猎户座飞船和波音为名为“太空发射系统”的登月任务建造的火箭。
An allotment of $ 651 million will be used to support the Orion Spacecraft and the rocket that Boeing is building for the moon mission -- called the Space Launch System or SLS .
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美国宇航局已经在太空发射系统上投入了至少119亿美元，该系统本该在2017年12月准备就绪。
NASA has already spent at least $ 11.9 billion on the SLS , which was supposed to be ready by December 2017 .