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篇章剖析：这篇文章讲述了一种新发明的灯泡。第一段讲述白炽灯的缺点和新灯泡的优点；第二段讲述白炽灯泡不耐用的原因；第三段讲述一家英国公司发明的新灯泡；第四段讲述这种新灯泡的原理；第五、六段讲述新灯泡的优点。
词汇注释：i
ca
desce
tadj白炽的西filame
t
灯丝io
isev电离diode
二极管
dud
（口语）不中用的东
electrode
电极plasma
等离子体toxicadj中毒的，有毒的
难句突破：
1Whe
thealumi
iumoxideisbombardedwithmicrowavesge
eratedfromthesamesortofdevicethatpowersamicrowaveove
aco
ce
tratedelectricfieldiscreatedi
sidethevoid
f主体句式Whe
thealumi
iumoxideisbombardedwith…aco
ce
tratedelectricfieldis…
结构分析这是一个复合句，whe
引导的是时间状语从句，该从句中，that引r