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通过对３００ Ｌ液氮杜瓦的结构的热力学分析，提出了对其颈管尺寸、底侧部支撑及绝热方式等方面的重大技术改进， 解决了将３００ Ｌ液氮杜瓦用于贮存和长途汽车运输的技术问题。经测量， 其日蒸发率小于１１％ 。
Based on the thermodynamic analysis of the structure of 300 L liquid nitrogen Dewar, a major technical improvement was proposed for its neck tube size, bottom side support, and insulation mode, and the solution of using 300 L liquid nitrogen Dewar for storage and long distance Motor transport technical problems. After measurement, the daily evaporation rate of less than 1 1%.