目前实际应用的开关管多数工作在火花放电区域(巴邢曲线的右支)，使用的电极材料一般为钨、钼、不锈钢、水银、石墨等。
Most of the switch tubes used presently work in the gas spark region (the right branch of Paschen curve), and are made of graphite and mental such as tungsten, molybdenum, stainless steel and mercury.
在一种特殊的钨酸空心管的基础上制备了一种结构简单且灵敏的亚硝酸根离子选择性电极。
A new type of simple and sensitive nitrite ion-selective electrode based on the special tungstic acid hollow tube has been prepared.
并通过一系列焊接工艺试验，确定采用管子内缩管板和高铬镍焊材及自动脉冲钨极氩弧焊方法，提高了管子管板的焊接质量和可靠性。
A series of welding process testing showed that using recessed tube-tube sheet, high Cr-Ni welding materials and automatic TIG welding technology could improve the welding quality of tube-tube...
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