The ion mobility was measured at different temperatures and the effects of the temperature in drift tube on the variety and yield of the reactant ions and product ions were discussed.

It this report, it is have a sample introduction of CMS Muon detector, the drift tube introduction and chamber construction.

The pipeline installation technique, the pipeline floating pulling method,is described combined with the construction of YongHuNing Import Oil Pipeline.

Analysis of interventional therapy in lung cancer s patients retaining pipe of afloat in the pulmonary artery for long term;

Cryogenic and vacuum performance test for NBI drift tube;