气体成分;气体组成

gas composition的用法和样例：

例句

The solar system began as a disk of dust and gas swirling around the young sun.太阳系一开始是一个由灰尘和气体组成的圆盘，围绕年轻的太阳旋转。
The PQR shall include the composition and flow rate of the shielding and inert gas backing, when used.焊接工艺评定记录单上应包括封底焊时所用的惰性保护气体组成成分和流率。
A new method for recognizing gas components in air based on nonlinear fluorescence spectra combined with a neural network model was proposed.提出利用物质的荧光光谱联合人工神经网络识别大气中杂质气体成分的新方法。

英文笑话：The Composition Class 作文课

The students in the composition class were assigned the task of writing an essay on the most beautiful thing I ever saw. The student who, of all the members of the class seemed the least sensitive to beauty, handed in his paper first with astonishin

发表于:2019-01-02 / 阅读(48) / 评论(0)

英文笑话

英文笑话：Problem with gas放屁的问题

A little old lady goes to the doctor ... and says,

发表于:2019-01-02 / 阅读(72) / 评论(0)

英文笑话

Gas Shortage Intensifies in Mexico

Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th

发表于:2019-01-03 / 阅读(72) / 评论(0)

VOA2003（上）-国际时讯

VOA标准英语2008年-Gas Prices Soar, Americans Buy Smaller Cars

By Deborah Block Washington 13 May 2008 As the price of gasoline continues to rise in the U.S., more Americans are buying smaller, more fuel-efficient vehicles. Others are holding on to their big cars, in hopes that gas prices will eventually go down

发表于:2019-01-13 / 阅读(67) / 评论(0)

VOA标准英语2008年（五月）

英语博客(A cup of English):013 Do you have gas?

Do you have gas? Beginners. What kind of a question is that? Are you talking about my body or my car? Well, actually, I am talking about your car. Gas, or petrol, as it is called in England, is a big subject at the moment. Driving a car has become re

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英语博客 A cup of English

VOA常速英语2008年-Israel to Redistribute Gas Masks Amid Fears of

By Robert Berger Jerusalem 02 April 2008 Israel is strengthening security on its home front in a sign of war jitters. As Robert Berger reports from VOA's Jerusalem bureau, Israel is casting a wary eye toward Iran. Israel's security Cabinet has decide

发表于:2019-01-30 / 阅读(74) / 评论(0)

VOA常速英语2008年（四月）

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below resonance balancing machine