[化] 换热器结垢

step by step 第四册 lesson 135

UNIT 68 POPULAR SCIENCE (Ⅰ) Lesson 135 Part Ⅰ Warming-up Exercises Note-taking: Inventions The words you may need for your note-taking in this drill: gasoline / barometer / Polaroid / pendulum / D

发表于:2018-12-27 / 阅读(91) / 评论(0)

英语听力入门 (全四册)

英语音频杂志：慈善机构

These days there are thousands of charities round the world and it is possible to donate money to help people, animals and places. (A) The RSPCA (Royal Society for the Prevention of Cruelty to Animals) was the first organisation dedicated to the well

发表于:2019-01-02 / 阅读(98) / 评论(0)

英语音频杂志

SSS 2008-08-08

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Ever been woken up by the sound of the refrigerator compressor kicking on? Well, such clumsy heat exchange units featuring long metal coils may be on their way out. Becaus

发表于:2019-01-08 / 阅读(66) / 评论(0)

Scientific American(八)月

比蒙障碍 Beamonesque

Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma

发表于:2019-01-08 / 阅读(118) / 评论(0)

英美文化

狗狗为何光脚不怕冷

狗狗为何光脚不怕冷日本一位科学家研究发现，狗之所以能够光脚在雪地上行走自如，而不觉得冷，奥秘之处在于其脚掌上有个内部中央供暖系统，它能让温暖血液流到特定部位，以避免冰冷

发表于:2019-02-01 / 阅读(35) / 评论(0)

实用英语

Iberia Star win UEFA Cup Futsal Elite Group D qualifiers

Iberia Star win UEFA Cup Futsal Elite Group D qualifiers TBILISI, Oct. 14 (Xinhua) -- Iberia Star Tbilisi from hosts Georgia on Sunday overwhelmed a one-man-short SL Benfica of Portugal to win the Group D of the Elite qualification for the 2012-2013

发表于:2019-02-03 / 阅读(62) / 评论(0)

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学英语单词

analytic statistics method

anterolateral syndrome

aquifar

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automatic digital recording and control

bean family

bismuth sulfide iodide