A system that can protract add-pressure technical curve of low-pressure die casting has been programed, it may be used easily and quickly in the technics.(開發了低壓鑄造加壓工藝規范曲線系統，通過此系統可以方便快捷地繪出所需的加壓工藝規范曲線。)

To lengthen in duration; protract.(延長增加持續時間；)

Delay always breeds danger, and to protract a great design is often to ruin it.(推遲經常孕育危險，拖延一個偉大的工程常常意味著毀滅它。)

Give a blue print on city public traffic protract and query, which includes city public traffic protract arithmetic, querying shortcut arithmetic and magnifying local public traffic map arithmetic.(給出一個城市電子公交地圖繪制和查詢系統的解決方案，該方案涵蓋了城市公交線路的繪制算法、最短路徑查詢算法、對局部公交地圖的放大算法。)

The result indicates that this software can protract good real-time spectral responsibility curve.(結果表明，該軟件能很好地繪制出實時的光譜響應曲線。)

This article introduces a method of constructing experiment equipment toolbar which is able to protract experiment equipment graph quickly.(介紹了一種創建實驗儀器工具欄的方法，可以快速繪制實驗儀器圖形。)

The paper uses Bouguer-Beer law calculating common mathematic expression to protract specification curve of increasing color reaction and depigmentation reaction in spectrophotometry analysis.(介紹了在分光光度法分析中，增色反應和褪色反應的標準曲線繪制用朗伯—比耳定律可推導出一般數學表達形式。)

Using this method, we can protract vector analysis atlas of planetary gear drive mechanism.(應用此方法，可定性地繪制出行星齒輪傳動機構速度分析圖譜。)

Protract 20 detailed tables, which make the research object more concrete.(繪制了較為精細的圖表二十張，使研究對象更為直觀明了。)

Also, the protract method of the equivalence circuit of the columnar windings of the transformer is given.(并給出變壓器圓筒式線圈的等值電路的繪制方法。)

This they did merely to protract time.