Through analysing the inner stress caused during constructing, a more technical and economical method is reached.
通过施工过程内力分析，指出施工技术关键。
The technical and economical requirements for the cored wire used in nodular iron pipe production can be satisfactorily met by adopting orthogonal experimental method to determine its composition.
用正交试验方法确定包芯线的成分，使其在技术方面和经济方面能较好地满足球铁铸管生产的要求。
It has obvious technical, economical and safety advantages over the traditional method of producing potassium tert butoxide from metallic potassium.
它比传统金属钾制取叔丁醇钾有明显的技术、经济、安全优势。
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