单词：tin(iv) phosphorus chloride
单词：tin(iv) phosphorus chloride 相关文章
By Robert Berger Jerusalem 30 September 2006 Labor unrest is growing in the Gaza Strip, where cash-strapped Palestinians are venting their anger at the government, led by the Islamic militant group Hamas. Hamas has rejected international conditions
2006年VOA标准英语（九月）
Rival Palestinian factions Fatah and Hamas are holding talks aimed at healing their divisions and creating a new unity government. Delegations from the two factions met at the Cairo office of Egypt's intelligence chief Omar Suleiman, who has been le
VOA标准英语2009年(二月)
The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松（松树）制成, 在液体的石蜡
英国学生科学读本
Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢
2018年NPR美国国家公共电台2月
This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R
Scientific American(十二)月
This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that
VOA慢速英语2008年（八）月
By Robert Berger Jerusalem 22 December 2006 Rival Palestinian factions have clashed again in the Gaza Strip and West Bank. At least one person was killed and six wounded. As Robert Berger reports from VOA's Jerusalem bureau, a breakdown of law and o
2006年VOA标准英语（十二月）
By Robert Berger Jerusalem 25 May 2006 Palestinian Prime Minister Ismail Haniyeh of Hamas, center, attends a Palestinian National Dialogue Conference in Gaza City Rival Palestinian factions have opened talks aimed at easing tensions, which have esca
2006年VOA标准英语（五月）
By Sonja Pace Jerusalem 25 January 2006 Palestinian family look at a voting list outside a polling station in the West Bank City of Jenin, 25 January 2006 Palestinians are voting for a new parliament
2006年VOA标准英语（一月）
By Robert Berger Jerusalem 28 January 2007 Palestinian militants from Al-Aqsa Martyrs' Brigades kidnap Fayyad al Arba, a local Hamas leader, center, in the West Bank town of Nablus, 28 Jan 2007 Rival Palestinian factions have clashed in the Gaza Str
2007年VOA标准英语（一月）
By Robert Berger Jerusalem 13 January 2007 Warring Palestinian factions have given an optimistic assessment about a new round of coalition talks. As Robert Berger reports from VOA's Jerusalem bureau, the negotiations come amid an increasingly violent
2007年VOA标准英语（一月）
By Robert Berger Jerusalem 11 November 2006 Rival Palestinian factions say they're close to an agreement on a national unity government that would diminish the powers of the ruling Islamic militant group Hamas. The Palestinians hope such a governmen
2006年VOA标准英语（十一月)
Every winter some twenty million tons of salt are dumped on America's road.That sodium chloride melts the ice, so it prevents its formatin, helping to prevent accidents. But road salt has its downside. This is not very economical because salt is main
2016年Scientific American(一)月
This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway
自然百科2009年
The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor
万物简史
By Robert Berger Jerusalem 09 June 2006 At least seven Palestinian civilians have been killed in Israeli shelling in the Gaza Strip. Injured girl is treated by medics at hospital in northern Gaza Strip, Friday Israeli artillery shells slammed into a
2006年VOA标准英语（六月）
By Robert Berger Jerusalem 02 September 2006 Tens of thousands of Palestinian government employees, who have not been paid in months, went on strike Saturday. The labor unrest poses a major challenge to the Palestinian government, led by the Islamic
2006年VOA标准英语（九月）
Tony: Who did you invite over for dinner Saturday? Carmela: I invited Keith, Sung, Stephanie, and Luis. Tony: You didnt! Carmela: I did. Why? Tony: Youre going to have a hard time cooking for them. Keith is a vegan and only eats food thats organic. S
地道美语播客
First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先，我对您说，海底有锌、铁、银、金等矿藏，开发并不是不可能的事。
《海底两万里》中英双语有声读物
Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche
英语听力文摘 English Digest