孔隙水

VOA慢速英语2018--Space Digest

(THEME) VOICE ONE: This is Phoebe Zimmerman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. On our program today, we tell about the American space agencys plans to help young students learn about science and mat

发表于:2019-01-03 / 阅读(33) / 评论(0)

2018年VOA慢速英语(九)月

清洁空气4观叶植物

These hardworking houseplants can sweeten every breath you take . Put Your Plants to Work In the early 1980s, when NASA researchers were looking for ways to purify the air inside the space pods of the future , they didn ' t just look to engineer a pr

发表于:2019-01-08 / 阅读(64) / 评论(0)

英语小短文

2006年VOA标准英语-NASA Technology Aids Water Purification Efforts

By Paul Sisco Washington, DC 26 July 2006 watch Water Purification report Villagers in Iraq are better off today, thanks in part to NASA engineers from the Marshall Space Center in America's deep south. ------- Concern for Kids is a non-profit organ

发表于:2019-01-12 / 阅读(92) / 评论(0)

2006年VOA标准英语（七月）

2007年VOA标准英语-Scientists, Space Enthusiasts Share Vision for

By Mike O'Sullivan Los Angeles 04 September 2007 Humans could get to Mars in less than 10 years, if they put their minds to it. That is the message of the Mars Society, a group of scientists and space enthusiasts who met recently in Los Angeles. VOA'

发表于:2019-01-25 / 阅读(76) / 评论(0)

2007年VOA标准英语（九月）

Vast water vapor beyond solar system found

BEIJING, Oct. 21 (Xinhuanet) -- A team of European researchers announced that they have found vast water vapor out of our solar system, according to a study in the U.S. journal Science Friday. Using Herschel Space Observatory, a European Space Agency

发表于:2019-02-09 / 阅读(62) / 评论(0)

英语新闻

英语听力文摘 English Digest 277、孔隙

Sugar bowls and hole 孔隙是岩土固体矿物颗粒间的空间。岩土中直径大于1毫米、重力水可于其中自由运动的孔隙，是大孔隙（macro-pore，large pore）。岩土中直径为0.01～1毫米、重力水和毛管水可存其

发表于:2019-03-09 / 阅读(85) / 评论(0)

英语听力文摘 English Digest

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