One time tubesealing and exhausting technique is an advanced technique in which vacuum arc chute are processed.
一次封排工艺是生产真空灭弧室的先进工艺，排气、封口同时进行一次完成。
2
Based on the practical operating condition of the stern tubesealing system, a new model of heat transfer is presented in this paper.
本文根据尾轴密封装置的工作实际，提出一种新的传热模型。
3
Objective To explore whether tubesealing on trochar with heparin dilution liquid is excellent than sodium chloride in patients with pneumocardial disease.