单词：A.C.three-phase three-wire insulated system
单词：A.C.three-phase three-wire insulated system 相关文章
The Federal Opposition is demanding the government inspect all homes insulated under its failed scheme. More than one million homes have been insulated under the program. But the government's paying for just 200,000 of them to be checked. The Opposit
澳洲ABC新闻快递2010年
The fridge is one of your homes biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one of the best insulators known. But vacuum-insulated panels are too pricy for widespread use. Enter
60秒科学
今天我们还要学几个美国总统大选中常用的习惯用语。我们曾经说过，英语词汇很多都来自体育运动。今天要学的第一个习惯用语就来自号称皇家运动的赛马: down to the wire。这里的wire指赛马跑
美国习惯用语
今天我们要学的词是down to the wire。 Down to the wire, 是直到最后一刻的意思。美国总统大选已经进入倒数计时，星期二一大早，全美各地的投票站就要开门了。 Presidential candidates McCain and Obama ar
英语每日一词
If you visit upland areas of Britain places like the mountains of Scotland, or Wales, or the Pennine Hills in northern England you will see a lot of sheep. Many of the sheep are in places where there are no walls or hedges to keep them in their field
听播客学英语
Bird on a Wire 当我们行走在马路上时，经常可以看到成群的麻雀或乌鸦停落在几万伏的高压电线上，它们不仅不会触电，而且一个个显得悠闲自得。可是，你也知道，如果有人不小心碰到高压线
英语听力文摘 English Digest