[化] 峰面积

peak area的用法和样例：

例句

There will always be enough pentane in the syringe to leave a small peak on the chromatogram.利用适当峰的峰面积，可以计算在每一种馏份和原油中的香芹酮和柠檬烯的含量。
This method can only be applied to roughly test impurity content of test samples due to relatively big deviation produced by peak area normalization method.由于峰面积归一化法测定误差大，因此，本法通常只能用于粗略考察供试品中的杂质含量。

公共英语热点新词

1. Peak people: 人口顶峰。这个词组就是指世界人口达到最高值的时期，之后的人口数量会因为出生率的降低或全球能源、食物、水资源匮乏而呈稳定下降的趋势。据说我们已经 reached peak people，

发表于:2018-12-18 / 阅读(165) / 评论(0)

实用英语

新标准初中英语九年级(上):UNIT2 The Peak

[00:00.00]Module 7 TRAVELLING TO HONG KONG [00:06.62]UNIT 2 The place at the top of the mountain [00:10.74]is called the Peak. [00:12.85]1 Listen and read. [00:16.00]Today was a long day but it was very exciting. [00:19.54]This morning, we went to Ho

发表于:2018-12-29 / 阅读(176) / 评论(0)

外研社新标准初中英语九年级

地道英语在线听-Peak 高峰顶点

What's another meaning for peak? Helen: This is Real English from BBC Learning English. I'm Helen. Zo: 欢迎收听今天的地道英语，我是刘佳。 Helen: Today we're going to look at words and phrases that have recently become part of the English language. Z

发表于:2019-01-02 / 阅读(190) / 评论(0)

地道英语在线听

音乐咖啡厅:Anne-Marie - Peak

Wasn't I enough Didn't I amount to you I don't blame you for the love That I lost to her It will take time A lot of heartache too But I was in love I thought you were too No one compares if I'm honest I've beaten myself blue I wish you could've been

发表于:2019-01-03 / 阅读(206) / 评论(0)

音乐咖啡厅

2006年VOA标准英语-World Oil Price Peak Disputed

By George Dwyer Washington, DC 01 May 2006 watch World Oil Peak report Rising oil prices have many consumers and business people wondering how long it will be before the price of a barrel of oil or a

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2006年VOA标准英语（五月）

阿拉斯加国家公园：海拔6190米的德纳里峰

Denali: The Alaskan Wild 阿拉斯加国家公园：海拔6190米的德纳里峰 This week on our national parks journey, we travel to the largest state in terms of land area: Alaska. Alaska is home to more national parks than any other state. It is

发表于:2019-01-12 / 阅读(162) / 评论(0)

2016年VOA慢速英语(九)月

/i: /和/i/的发音方法和区别

一./i: /和/i/的发音区别这两个音不仅仅存在长短的差别，更重要的还有音调高低的差别。/i: /和/i/虽是一长一短的一对，但它们的发音效果却不一样，发/i/音时，音不仅要短，舌面还要离开上

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实用英语

美国文化脱口秀第173期:国庆长假怎么过

国庆长假一直是旅游旺季，热门景区都是人山人海；加上高速公路免收通行费，许多有车一族选择自驾游，在高速上打起了羽毛球。这个国庆，要么在景区哭，要么在家里笑，你选哪一样？国

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美国文化脱口秀

英语博客(A cup of English):079 Andorra.

Beginners. Andorra is one of the smallest countries in Europe. It is high up in the Pyrenees. If you look at the map of Europe, you can see that it lies exactly between France and Spain. It is a very mountainous area that has spectacular views. Thoug

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英语博客 A cup of English

生命的最佳时刻

The ups and downs of life may seem to have no predictable plan.But scientists now know there are very definite patterns that almost all people share.Even if youve passed some of your prime,you still have other prime years to experience in the future.

发表于:2019-02-01 / 阅读(152) / 评论(0)

实用英语

每日一词【354】taper off：逐步减弱

今天我们要学的词是taper off。 Taper off, 是逐步减弱，逐步停止的意思。The number of tourists in the beach area tapered off after the peak season, 旅游旺季结束后，到海边来玩的游客慢慢减少了。Sales are expec

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英语每日一词

英文歌曲:Woohoo

Woohoo You Know You Really Wanna (HEY) , Wanna Tasty My , You Know You Wanna Get a Peak Wanna See My , You Wanna Put Your Lips Where Hips Are , Kiss On My , All Over My , All The Boys Think Its Cake When They Taste My , You Dont Even need A Plate , j

发表于:2019-02-03 / 阅读(179) / 评论(0)

好听的英文歌曲

何时是生命中的最佳时期？

人生的起伏似乎没有可预知的模式，但是科学家现在发现有一些模式相当明确，绝大多数人都不例外。即使你度过了一些最佳时期，你仍然会在将来经历另外几个最佳时期。某些最佳期时期似

发表于:2019-02-05 / 阅读(143) / 评论(0)

英语美文

你会用“短信文”吗

跟朋友发短信或者在网上聊天的时候，总是会看到lol，ttul等让人摸不着头脑的一些缩略语，想直接问人家吧，又怕被人家笑话。到网上一搜才发现，原来这些都属于textese（短信文），（lol是

发表于:2019-02-06 / 阅读(157) / 评论(0)

实用英语

学个词Learn a Word 第354期 Taper off

发表于:2019-02-06 / 阅读(153) / 评论(0)

英语单词荟萃

英语博客：Andorra.

图片1 Beginners. Andorra is one of the smallest countries in Europe. It is high up in the Pyrenees. If you look at the map of Europe, you can see that it lies exactly between France and Spain. It is a very mountainous area that has spectacular view

发表于:2019-02-06 / 阅读(125) / 评论(0)

英语博客 A cup of English

Every mountain has a peak

Every mountain has a peak What is the secret ingredient of tough people that enables them to succeed? Why do they survive the tough times when others are overcome by them? Why do they win when others lose? Why do they soar when others sink? The answe

发表于:2019-02-07 / 阅读(159) / 评论(0)

阅读空间

热门单词：“最大负荷”用英文怎么说？

北京出现连续高温天气，13日16时33分，北京地区电网最大负荷达到1831.2万千瓦，突破了2013年的历史最大纪录1776万千瓦，增长3.1％。请看相关报道： Peak load in Beijing hit 18.3 million kilowatts (kW) a

发表于:2019-02-13 / 阅读(159) / 评论(0)

英文语法词汇

英闻天下——104 Flu Season Peak Expected for North China

Health official says the flu season that started in China's northern provinces in December is expected to peak with infections in the next few weeks. However, Ministry of Health spokesman Deng Haihua said the expected peak infection levels will not r

发表于:2019-02-14 / 阅读(165) / 评论(0)

英闻天下

China braces for another travel peak

China braces for another travel peak BEIJING, Oct. 6 (Xinhua) -- China's transport networks are expected to experience another travel peak Saturday and Sunday, when millions of holiday-makers return as the week-long holiday draws to an end. Trains ar

发表于:2019-02-17 / 阅读(165) / 评论(0)

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学英语单词

administrative geography

akobo wenz

application oriented system

aquathlons

be still

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bisync(binary synchronous communications)