对小半径弯管国产化的可行性，作了技术论证。
The feasibilities of small-radius pipe-bender made in china are demonstrated in technique.
经过充分的技术论证和经济评价，最后以技术先进，实用可靠。
After full technical appraisal and economic evaluation, and the final technologically advanced, functional and reliable.
笔者结合川江驳船队的运输情况，对这一设想作了初步的技术论证和经济论证。
In combination with the investigation into the transport of barge fleet of the Changjiang River in Sichuan Province, the author mates preliminary technical and economical analysis to this assumption.
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