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- dull emitting cathode 微热发射阴极
- Experimental study on effective emitting area of explosive emitting cathode 场致爆炸发射阴极有效发射面积研究
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- The dull play seemed to last an eternity. 这场乏味的剧似乎演个没完没了。
- Market dull and slacken no business report. 市场萧条胩衰退，没有有关交易的报道。
- The absence of color in that drawing make it dull. 那幅画因没有着色而显得晦暗。
- The dying fire was throwing out a dull red light. 将要熄灭的火发出暗红色的光。
- The cheese was emitting a strong smell. 干酪散发出强烈的气味。
- The old man's life became dull and colorless. 老人的生活变得呆板无趣。
- I feel a dull pain in the stomach. 我觉得胃部隐隐作痛。
- A person regarded as ungainly or dull witted. 愚笨的人被认为是笨拙的或弱智的人
- He couldn't teach such dull children. 他教不好这样呆笨的孩子。
- He felt a dull ache in his shoulder. 他感到肩膀隐隐作痛。
- It is now unlawful for factories to emit black smoke into the air. 工厂向大气中排放黑烟现在是违法的。
- He is rather dull in comparison with others. 和别人比较起来，他相当迟钝。
- An electron tube having a cathode and an anode. 电子二极管有一个阳极和一个阴极的电子管
- She took drugs to dull the pain. 她吃了药以减轻疼痛。
- All work and no pay makes Jack a dull boy. 只有工作无工资，杰在也得变蠢才。
- electron emitting cathode 电子发射阴极
- A dull, pedantic speaker or writer. 学究枯燥而迂腐的讲话人或作者
