分流式分选,气流式分级

说说星座故事

说说星座故事 Astrology is an ancient practice, and appears to have its origins in Chaldea, thousands of years B.C. By 700 B.C., the Zodiac was established. A few centuries later, the Signs of the Zodiac were very similar to the current ones. 占星

发表于:2019-01-03 / 阅读(58) / 评论(0)

趣味英语

SSS 2012-02-01

It's tough to be a machine in the desert. Particles of dirty sands walk their way in to moving parts where they break turbine's motors pipes on other equipment.To avoid the costly warranty, researches are taking lessons from a desert native, the yell

发表于:2019-01-08 / 阅读(58) / 评论(0)

Scientific American(二)月

本·拉登私人信件曝光

WASHINGTONDo you wish to execute a suicide mission? What objectives would you like to accomplish on your jihad path? Who should we contact in case you become a martyr? Do any of your family or friends work with the government? If so, would he/she be

发表于:2019-01-16 / 阅读(83) / 评论(0)

英语新闻

Madrid top Spanish basketball league

Madrid top Spanish basketball league MADRID, Oct. 7 (Xinhua) -- Real Madrid are top of the Endesa ACB basketball league after the second round of matches in the competition on Sunday. Madrid won 100-75 away to Blancos Rueda Valladolid in midweek befo

发表于:2019-02-18 / 阅读(75) / 评论(0)

英语新闻

【英语时差8,16】打喷嚏-下

Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze. Because the nose lining tends to swell when we lie down, making it even more sensitive to sneeze-causing particles,

发表于:2019-02-23 / 阅读(293) / 评论(0)

英语时差8，16

赖世雄进阶英语词汇3500 Unit136

correspond vi.通信；符合（均与介词 with 并用） Tom often corresponds with his foreign friends because he thinks it is a good way to practice his writing. 汤姆常和他的外国朋友通信，因为他认为这是一个练习写作的好方

发表于:2019-03-17 / 阅读(328) / 评论(0)

赖世雄进阶英语词汇3500

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学英语单词

accept nomination

accessory groove

adiposis tuberosa simplex

adjust error

alloying addition agent