氟取代聚苯乙烯

SSS 2009-08-21

The Great Pacific Garbage Patch may be disappearing, and not in a good way. New research presented at the biannual meeting of the American Chemical Society reveals that polystyrene actually can break down in seawater. Polystyrene is probably better k

发表于:2018-12-24 / 阅读(213) / 评论(0)

Scientific American(八)月

蒋健棠英语实用句子(131):We don't have any more pens, can we substitute pencils.

We don't have any more pens, can we substitute pencils. 已经不再有钢笔了，可用铅笔来代替吗？ substitute表示以...代替。注意上句中substitute后的pencils不是被替换的，而是用来替换pens的。如果要明确表明用

发表于:2018-12-25 / 阅读(183) / 评论(0)

蒋健棠英语实用句子

电信专业英英词典K

Key Telephone System (KTS) KTS is an arrangement of multi-line telephones and associated equipment that permits the station user to depress buttons (keys) to access different central office or PBX lin

发表于:2019-01-03 / 阅读(151) / 评论(0)

电信英语

机械类词汇大全-28

1135 、晶体点阵；晶体格构；晶格 crystallattice 1136 、棘轮和爪 ratchetandpawl 1137 、棘齿 ratchet 1138 、棘齿弓钻 ratchetbrace 1139 、壳型模塑 shellmoulding 1140 、

发表于:2019-01-03 / 阅读(229) / 评论(0)

英文名句短语

VOA标准英语2010年-Coal Burning Linked to Fluoride Diseas

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

发表于:2019-01-14 / 阅读(194) / 评论(0)

VOA标准英语2010年(十)月

旅游英语口语就该这么说:第225期职业工作代班

Could you cover for me on Tuesday? I'm not coming back until Wednesday. 你星期二可以帮我代班吗？我要到星期三才回来。 Sure. What's up? 当然可以，有什么事吗？ He substituted for his colleague who was ill. 他为生病的同

发表于:2019-01-15 / 阅读(170) / 评论(0)

旅游英语口语就该这么说

攻克英语六级阅读3

1.People will come to expect that injured or diseased organs are meant to be repaired from within,in much the same way that we fix an appliance or automobile: by replacing the damaged part with a manufacturer-certified new part. 人们将开始期望受

发表于:2019-01-17 / 阅读(203) / 评论(0)

大学四六级阅读

【英语时差8,16】为什么特氟隆很滑

Why Teflon Is Slippery Teflon is the trademark name for PTFE, a type of plastic. If you own any non stick cookware, then you probably use PTFE on a daily basis. You might not realize, as you fry your morning eggs, that PTFE is one of the most slipper

发表于:2019-01-22 / 阅读(346) / 评论(0)

英语时差8，16

Stramaccioni: Inter are rediscovering balance

MILAN, Jan. 12 (Xinhua) -- Inter Milan head coach Andrea Stramaccioni said his side are rediscovering their balance following their 2-0 victory over Pescara in the Italian Serie A league at home on Saturday. It went well, because the most important t

发表于:2019-02-11 / 阅读(240) / 评论(0)

英语新闻

用简单英语谈生意－订单篇

(91) A: Are you ready to place your order now? B: The order will be mailed to you next week. A: Is it going to the head office? B: No, I think it is going to be mailed to your local branch. A：你们准备好下订单了吗？ B：下星期就寄给你

发表于:2019-02-11 / 阅读(167) / 评论(0)

实用英语

《荒野求生》之跟着贝尔去冒险第179期:海上求生的关键

But there's no guarantee rescue will come,and with such little water here, 是否有人救援还是未知之数此地淡水贫乏 your health will start to decline rapidly. 人的健康状况会迅速恶化 Given that choice, I'd build a raft and se

发表于:2019-02-15 / 阅读(238) / 评论(0)

荒野求生

英语听力文摘 English Digest 197、特氟隆为何如此滑

Why Teflon Is Slippery？ 1954年，法国工程师马克格雷瓜尔(Marc Gregoire)的妻子柯莱特(Colette)突发奇想，觉得丈夫用来涂在钓鱼线上防止打结的不粘材料特氟龙(Teflon)如果可以用在煎锅上，效果一定不错

发表于:2019-02-24 / 阅读(209) / 评论(0)

英语听力文摘 English Digest

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学英语单词

a window of opportunity

adjust the time

aider by verdict

Anaspidea

Angelo Guiseppe Roncalli

asplenium austro-chinense ching

assignment lamp

asymmetrical polyphase current

await

axle-tooth

Bactroban