The air-valve was compared with one-way tank, both of which are used for avoiding liquid column separation in the pipe.

计算结果表明，在局部凸起点附近加装单向调压塔更能较好地避免液柱分离的发生。

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Heat preservation repairing technique for the tank by the vacuum powder heat insulation method in the air separation device is presented, and related notable matters and key points are expounded.

介绍了空分设备中真空粉末绝热贮槽保温修复技术，并详细叙述了有关的注意事项和要点。

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