In the preliminary design stage, the designer emphatically considered the product should have function.
初步设计阶段，设计者着重考虑产品应该具有的功能。
To make its case, RKK Energia took the unusual step - at a preliminary design stage - of ordering the construction of an experimental propulsion system.
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。
Once more, the third chapter, in the preliminary design process, the use cause and effect chart analytic method, searches the preliminary design stage quality control the key point.
再次，第三章，在初步设计过程中，利用因果图分析法，查找出初步设计阶段质量控制的关键点。
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