粉末滤光片

powder filter的用法和样例：

例句

A satisfactory approximation to monochromatic light can be obtained with a filter placed in front of the arc.在碳弧前面放一个滤光片就可以得到令人满意的近单色光。
This article firstly advances the designing of a wide wave band polarization rotator by using Polarization Interference Filter.首次提出了基于偏振干涉滤光片设计方法的宽波带偏振方向旋转器。

掌握英语发音第一章第三节

[00:00.00][s],[ ][ ] [00:38.61]sea/sheet/chicken [00:42.66]Exercise One: Word Conparison [00:47.62]Listen to the following words from your tape and repeat. [00:52.98]sip ship sane shane watched washed [01:01.23]lass lash least leashed chin [01:09.09]

发表于:2018-12-03 / 阅读(159) / 评论(0)

掌握英语发音

365个英语简短小故事-335. The Vacuum Cleaner Filter(2)

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

发表于:2018-12-11 / 阅读(95) / 评论(0)

365个英语简短小故事

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[00:04.99]Lesson 17 1 Dialogue [00:10.55]Mick is in the garden with his mother. [00:14.81]He has got lots of questions to ask. [00:19.17]Mick: What are you doing,Mum? [00:22.54]Mum: I'm sowing cabbages. [00:25.99]What's that in your hand? [00:29.26]C

发表于:2018-12-13 / 阅读(126) / 评论(0)

高中英语人教版高一

Fonterra Apologizes for Tainted Milk Powder Scare

New Zealand dairy firm Fonterra has apologized for its tainted milk powder scandal. Batches of the whey protein from the dairy giant were allegedly found containing toxic bacteria. Su Yi has more. Fonterra CEO Theo Spierings says Fonterra regrets any

发表于:2018-12-19 / 阅读(65) / 评论(0)

世界各地新闻集锦

Indian Scientists Invent Nose Filter to Protect Against Air Pollution

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(90) / 评论(0)

2018年VOA慢速英语(一)月

美国习惯用语:518 powder...

今天要讲的习惯用语都由这样一个关键词发展而来： powder。大家一定知道powder是粉，可以是扑脸的香粉，也可能是治病的药粉或者爆炸的火药，种类繁多。今天要学的第一个习惯用语是：

发表于:2019-01-14 / 阅读(128) / 评论(0)

美国习惯用语

原版英语对话：A Stomachache(1)

A: You dont look so good. B: I have a major stomachache A: Did you eat something strange? B: I had spaghetti with clam sauce for lunch. A: Maybe you have food poisoning. B: Yes, that could have been it, but I havent been feeling that great for the pa

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英语情景对话-健康

闭着眼睛飘单词四级词汇25

[0:0]feedback female fertile fertilizer反馈,反馈信息雌的,女性的肥沃的,富饶的肥料 [1:25.7254]festival fiber fiction fierce节日,喜庆日纤维小说凶猛的,残酷的 [2:12.0330]file filter finally finance档案,文件过滤器,过滤咀最后,终于财政,金融 [3:1.05

发表于:2019-01-16 / 阅读(119) / 评论(0)

闭着眼睛飘单词四级词汇

新西兰英语 618 Baby milk powder shortage

New Zealand mothers are having difficulty finding cans of baby formula in the supermarkets. Some supermarkets are limiting the number of cans to two per customer. The shortage may be because Chinese in New Zealand are buying cans of formula to send b

发表于:2019-01-27 / 阅读(79) / 评论(0)

新西兰英语

新西兰英语 58 Contaminated Baby Milk Powder in China

New Zealand discovered this weekend that a milk powder factory in China, partly owned by the New Zealand dairy company Fonterra, has been selling contaminated baby formula. One baby has died and more than 400 are suffering from kidney problems. Fonte

发表于:2019-01-27 / 阅读(53) / 评论(0)

新西兰英语

Suspicious Powder Discovered on Capitol Hill

Suspicious Powder Discovered on Capitol Hill Deborah Tate Three U.S. Senate office buildings are closed, and congressional business has been disrupted a day after a suspicious powder, believed to be t

发表于:2019-01-31 / 阅读(119) / 评论(0)

VOA2004（上）--各类新闻

2007年VOA标准英语-Water Filter Wins Developer Engineering Prize

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(131) / 评论(0)

2007年VOA标准英语（五月）

美国习惯用语:432 powder puff...

今天我们要讲的习惯用语有一个共同的关键词: powder。大家也许知道powder是粉末。有各种各样的粉末，例如女士化妆用的香粉，还有火药或者病人用的药粉等等。在我们要学的第一个习惯用语

发表于:2019-02-04 / 阅读(137) / 评论(0)

美国习惯用语

The Snipe and the Clam

Just as a clam came out to bask in the sun a snipe pecked at its flesh．The clam closed its shell and squeezed the snipe's beak．If it does not rain today and it does not rain tomorrow，you will be a dead clam，said the snipe．If you cannot free

发表于:2019-02-05 / 阅读(125) / 评论(0)

趣味英语

新西兰英语 97 Baby milk powder scandal in China, again

Last week, 21 people were found guilty in the case of contaminated baby formula in China. Two men who added melamine to the milk powder will be executed. The chairwoman of San Lu Dairy Company was sentenced to life imprisonment because she knew about

发表于:2019-02-05 / 阅读(62) / 评论(0)

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你们的恋爱关系健康吗？

1. You don't have to see each other every day. 你们不必每天都见面。 If you can, then why not? But you don't have to nag each other about you or your partner coming over just because you haven't seen a glimpse of each other for the day (yet)

发表于:2019-02-06 / 阅读(109) / 评论(0)

实用英语

美国俚语: 逃之夭夭 take a powder

今天要讲的美国俚语由powder发展而来。大家一定知道powder是粉，可以是扑脸的香粉，也可能是治病的药粉或者爆炸的火药，种类繁多。今天要学的第一个习惯用语是： take a powder。习惯用语t

发表于:2019-02-09 / 阅读(92) / 评论(0)

美国俚语

美国俚语:有备无患 keep one's powder dry

今天要学的习惯用语是： keep one's powder dry。在keep one's powder dry这个习惯用语里，powder指枪炮用的火药。以前步兵和水兵把火药装在火药桶里保持干燥，随时取用。要是哪个粗心大意的士兵忘了

发表于:2019-02-09 / 阅读(92) / 评论(0)

美国俚语

英语听力—环球英语 1207 Baby Milk Powder

Voice 1 Welcome to Spotlight. I'm Liz Waid. Voice 2 And I'm Mike Proctor. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 They were the top-selling milk p

发表于:2019-02-14 / 阅读(46) / 评论(0)

环球英语 Spotlight

Good-bye My Fancy

Good-bye my Fancy! Farewell dear mate,dear love! I'm going away,I know not where, Or to what fortune, or whether I may ever see you again, So Good-bye my Fancy. Now for my last-let me look back a moment; The slower fainter ticking of the clock is in

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