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After being smelted with fire assay and enriched with cupellation method,the precious metal is decomposed with chloroazotic acid.

试样经火试炼和灰吹富集后,合粒王水分解,在盐酸介质中,用火吸收分光光度法测定钯量。

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历年四级听力真题精听

The aircraft was carrying £265 million worth of gold and diamonds when the door flew open, sending the precious metal back to earth.

这架飞机当时载有价值 2.65 亿英镑的黄和钻石,当舱门突然打开时,被送回了地面。

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CNN 10 英语 2019年2月合集

Since this land only holds two grams of precious metal per ton of mud, mercury is needed to pull the gold from the sludge.

由于这片土地每吨泥浆只含有两克,因此需要用水银从淤泥中提取黄

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CNN 10 英语 2018年2月合集

It's hope to bring in more than $200 billion for Venezuela that's supposed to be supported by Venezuela's reserves of crude oil and precious metals like gold.

它希望为委内瑞拉带来超过2000亿美元的资,而委内瑞拉的原油和黄的储量理应得到委内瑞拉的支持。

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当月 CNN 10 英语 2020年12月合集

They believe that the value of precious metals and other materials on space rocks could far exceed the cost of sending equipment there and back.

他们认为,在太空岩石上的和其他材料的价值可能远远超过运送设备往返的成本。

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VOA Special 2017年11月合集

Vriens cautioned people against trying to find precious metals in drinking water.

韦瑞恩警告民众,请在饮用水中寻找稀有

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6 Minute English 六分钟英语

In this programme, we'll be finding out about a new idea to collect lumps of precious metals, called nodules, from the bottom of the ocean.

在本期节目中,我们将了解一个新想法: 从海底收集被称为结核的块。

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伊索寓言

The avaricious man prayed to have a room full of gold. No sooner said than done, but all his joy was turned to grief when he found that his neighbor had two rooms full of the precious metal.

贪婪的人祈求了一屋子黄。话音刚落,在他发现他的邻居拥有了两屋子的时候,他一下子从开心变得悲伤。

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Scishow 精选系列

There's gold, iron, and lots of other rare, precious metals.

有黄、铁和许多其他稀有

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英国原版小语文课

Silver is a precious metal, next in value to gold.

银也是,其价值仅次于黄

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经济人-财经

But there is another precious metal that could do the job, too.

但是还有另一种也能胜任这项工作。

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世界历史百科全书

Baalat, also often referred to as " Lady Baalat of Byblos" , was appealed to by kings so that they would have a successful reign, and altars and monuments made out of precious metals were constructed for her.

巴拉特,也经常被称为“比布鲁斯的巴拉特夫人”,受到国王的支持以便他们能够成功统治,并为她建造了用制成的祭坛和纪念碑。

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空中英语教室:中级版(2024年)

Now, we'll talk more about the dangers to the local wildlife, but nevertheless, scientists estimate that the quantity of precious metals on the ocean floor is many times the quantity of these metals accessible on land.

现在, 我们将进一步探讨对当地野动物的威胁,但尽管如此, 科家估计海底的总量是陆地上可获取量的许多倍。

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21世纪英文报

Gold items were found at the Sanxingdui Ruins site as early as 1986, including gold foil pieces that show how the precious metal was used by the ancient Shu people.

早在1986年,三星堆遗址就发现了黄制品,其中包括箔片,展示出古蜀人如何使用这种

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背诵为王第四册(60课全)

At first, people used precious metals, such as gold and silver, to make coins. In the 1200s, people in China used iron coins for their currency.

最初,人们用稀有,如子和银子制造硬币。 公元1200年,中国人使用铁币作货币。

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美国小英语5

On opening them again, he beheld only one yellow sunbeam in the room, and, all around him, the glistening of the precious metal which he had spent his life in storing up.

当他再次打开眼睛时,他只看到房间里有一束黄色的阳光,在他的四周,闪耀着他一积攒下来的

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VOA常速英语_美洲

They're looking for alternative forms of investment outside of stocks and bonds and precious metals, they're looking for something they're also passionate about and they're passionate about comic books.

他们正在寻找股票、债券和以外的其他投资形式,他们正在寻找自己热爱的东西,他们对漫画书充满热情。

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纽约时报 (New York Times)

Gold is " not perfect" for this purpose, he said, but investors' belief that now is a good time to hold it has supported demand for the precious metal.

他说,黄在这方面“并不完美”,但投资者认为现在是持有黄的好时机,这支撑了对这种的需求。

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霍比特人第一部:意外之旅

Airborne fire-breather. Teeth like razors, claws like meat hooks. extremely fond of precious metals. -Yes, I know what a dragon is. -I'm not afraid. I'm up for it.

会飞的喷火怪物。牙齿利如剃刀,爪子像挂肉钓。非常喜欢。-是的,我知道什么是龙。-我不怕,我准备好了。

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传统文化

This route was named after the valuable silk that was traded along it, but many other goods, such as spices, tea and precious metals were also exchanged.

这条路线因其贸易的珍丝绸而得名,但沿途还交易了许多其他商品,如香料、茶叶和

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融时报

So by retaining ownership, Toyota thinks it can give longer life to batteries and the much needed precious metals used like lithium, nickel and copper.

通过保留所有权,丰田认为它可以延长电池和锂、镍和铜等急需的的使用寿命。

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