single tipping meaning in English
前缘包边
Examples
- The density of its field emission catelectrode tip is about 24000tip / mm2 , the onset emission voltage is 0 . 5 ~ iv , the backward voltage is larger than 25v , the current of single tip is 0 . 2na , the sensitivity is 98 . 5mv / bar
其场致发射阴极锥尖阵列密度达24000个mm ~ 2 ，起始发射电压为1 5v ，反向电压25v ，当正向电压为5v时，单尖发射电流为0 . 2na ，压力灵敏度为98 . 5mv bar 。 - A large number of attempt and painstaking experiment have been done in this paper according to existing project . we also do lots of chemical and electrochemical etching research in material of lab6 , and find out three kind of methods to produce the field emitting cold cathode including reactive ion etching ( rie ) with oxygen , wet process etching and electrochemical etching . through produce some field emitting cold cathode single tip including lab6 field emitting cold cathode , molybdenum field emitting cold cathode , tungsten field emitting cold cathode , tungsten rhenium field emitting cold cathode , molybdenum covered with lab6 film field emitting cold cathode
而且,目前可借鉴的参考文献较少,围绕着前人做过的方案,本文做了大量工作,在已有文献介绍的基础上,结合原有的理论和实践基础,摸索出了包括高温氧作用反应离子( rie )刻蚀法、湿法腐蚀法和电化学腐蚀法在内的三种制备工艺,运用电化学腐蚀工艺成功制备了单尖的六硼化镧场发射冷阴极尖锥、钼场发射冷阴极尖锥、钨场发射冷阴极尖锥、钨铼合金场发射冷阴极尖锥以及有六硼化镧薄膜覆盖的钼场发射冷阴极尖锥。