为了证明自己的设计有道理，安吉亚太空公司走了非同寻常的一步：在初步设计阶段，定制建设了试验性的推进系统。
To make its case, RKK Energia took the unusual step - at a preliminary design stage - of ordering the construction of an experimental propulsion system.
论述了从初步设计到工程竣工验收各个阶段工程建设的造价控制。
It is discussed how to control the cost of a project in its various stages from the beginning of design to the cheeking before acceptance.
论述了从初步设计到工程竣工验收各个阶段工程建设的造价控制。
It is discussed how to control the cost of a project in its various stages from the beginning of design to the cheeking before acceptance.
应用推荐