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In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst.

本文利用三氯化铝作催化剂,废聚苯乙烯与溴发生亲电取代反应合成溴化聚苯乙烯阻燃剂

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It s also used as a component for the fabrication fiber, and an creodont for the removal of exposed lead circurt board.

在金属加业中用来作所需熔剂、金属表面铝钛硼合金,作砂轮和研磨盘成分,以此降低操作温度,还用作棉花和人造纤维阻燃剂及印刷电路中清除露出铅侵蚀液。

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Magnesium Hydroxide flame retardment has some characteristics of retarding fire,reducing smoke,cheap priceand safe stuff etc,therefore,it is applied widely.

氢氧化镁阻燃剂具有阻燃、硝烟、填充安全、价格低等特点岙被广泛开发研究。

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当月 CNN 10 英语 2019年10月合

We have seen those flames circling this area, and really disappearing over the backside of this ridge here, likely dropping fire retardant onto some of the homes below.

我们可以看到大火包围了整个地区,但在山脊背面被阻燃剂扑灭,消防员有可能会向山上的房屋附近投放阻燃剂

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当月 CNN 10 英语 2021年11月合

From literally throwing what they could at the threat like sprinkler systems that spray trees 35 to 40 feet in the air, and dropping fire retardant gel from aircraft into hard to reach groves, to extreme tree hugging.

从字面上来说他们尽其所能对大火进行喷洒,比如能喷射35到40英尺高树木的洒水系统,从飞机上对难以够到的树丛喷洒阻燃剂,另外还有紧紧包裹树干。

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双语版 TED-Ed 演讲精选

They also made great propellants, foaming agents, and fire-retardants.

用它还可以制造很好的推进剂,发泡剂和阻燃剂

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VOA Special 2022年7月合

In comparison, over the previous 10 years, the agency used 115 million liters each year.

相比之下,在过去10年里,该机构每年使用1。15亿升阻燃剂

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当月 CNN 10 英语 2020年9月合

One fire burned much of the city to rubble and ash covered by the red fire retardant you see in these pictures.

一场大火把城市的大部分地区烧成了瓦砾和灰烬,上面覆盖着红色阻燃剂,你在这些照片中能够看到。

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VOA慢速英语_美国

He told AFP the Forest Service usually does not drop the retardant in waterways and areas home to endangered animals -- unless the fire is threatening human life or public safety.

他告诉法新社,林务局通常不会在水道和濒栖息地投放阻燃剂,除非火灾威胁到人类命或公共安全。

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当月 CNN 10 英语

All of our samples included flame retardants and UV stabilizers, an alphabet soup of BPA, BPF, BPS, and around two dozen chemicals on each of our bands.

三人的手环都都检测到了许多化质,包括阻燃剂、紫外线稳定剂、双酚A、双酚F、双酚S以及大约 24 种其他质。

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VOA Special 2025年3月合

He noted that it would take " a lot" of retardant to poison, say, a large body of water.

他指出,要毒害一大片水域,需要“大量”的阻燃剂

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大西洋月刊(文章版)

No, actually. There's lots of toxins in all recycled plastic, but we're mostly just talking about flame retardants here.

其实并非如此。所有回收塑料中都含有大量毒素,但我们这里谈论的主要是阻燃剂

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CNN 10 英语 2022年9月合

Tankers whisking above the tree line, dumping retardant by the thousands of gallons to meet the advancing flames.

倾倒机在树木上方呼啸而过,将数千加仑的阻燃剂倾泻下来,以应对不断蔓延的火势。

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当月 CNN 10 英语 2019年10月合

The super-soakers dropping retardant trying to contain this but whoa it's raining down now.

这些“超级水枪”洒下阻燃剂想要控制住形势,哇,它们正往下掉。

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中高级英语短文

" First it needs to identify those flame retardants – some of them are toxic, " he says.

“首先,它需要识别那些阻燃剂——其中一些是有毒的,”他说。

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VOA慢速英语_

Hundreds of firefighters fought the fire on the ground and planes dropped water and retardant from above.

数百名消防队员在地面救火,飞机从空中降下水和阻燃剂

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60秒 听力 2016年10月合

Or fire retardants are a big problem these days. We're not sure what the problems are.

也许现在阻燃剂也是一个大问题。但是我们不确定是什么问题。

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VOA Standard 2014年6月合

Helicopters take crews to the scene of wildfires and tankers drop flame retardant from the air.

直升机将人员带到野火现场,灭火飞机从空中投掷阻燃剂

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VOA Special 2022年7月合

Both said that the ammonium-phosphates-based retardant is a fertilizer that can help invasive plants.

两人都表示,基于磷酸铵的阻燃剂是一种有利于入侵植长的肥料。

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PBS访谈环境系列

Planes poured retardant on the fire from above, while firefighters battled the inferno on the ground.

飞机从空中向这场大火倾倒阻燃剂,消防队员则在地面上的火海中搏斗。

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大西洋月刊(文章版)

And electronics are imbued, often, with flame retardants.

而电子产品通常都含有阻燃剂

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当月 CNN 10 英语 2019年10月合

We heard from Los Angeles Mayor Eric Garcetti who says they are going to have Cal Fire plains come through to basically drop fire retardant, to help spot some of these fires, and just within the past 20 minutes.

我们从洛杉矶市长Eric Garcetti处得知,他们将命加州消防局投放阻燃剂,同时观察火情。

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VOA慢速英语_美国

After the water dries up, the retardant keeps working until rain washes it into the ground.

水干涸后,阻燃剂会一直工作,直到雨水把它冲刷到地下。

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