三维模拟

VOA常速英语2017--美国与尼日利亚就石油化工方面进行合作

The United States is working closely with Nigeria to improve efficiencies in the vital oil sector. 美国正与尼日利亚紧密合作，以提升重要行业石油业的效率。 The U.S. Commercial Service Nigeria sponsored a Single Company Promot

发表于:2018-12-08 / 阅读(124) / 评论(0)

VOA标准英语2017年(二月)

SSS 2010-10-05

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Physics goes to the University of Manchesters Andre Geim and Konstantin Novoselov for their investigations of the two-dimensional material graphene

发表于:2019-01-08 / 阅读(63) / 评论(0)

Scientific American(十)月

SSS 2011-11-01

Venice's Church of the Most Holy Redeemer has held a musical celebration every year since its construction in 1592. And recently, the church has inspired debate among historians: How could its echoing chambers clearly portray the complicated music pe

发表于:2019-01-08 / 阅读(67) / 评论(0)

Scientific American(十一)月

VOA慢速英语2014 学校帮助狗狗克服飞行的恐惧

School Helps Dogs with Fear of Flying 学校帮助狗狗克服飞行的恐惧 Welcome to American Mosaic from VOA Learning English. Im June Simms. Today on the show we tell you about some unusual training for some exceptional animals: service dogs. T

发表于:2019-01-12 / 阅读(46) / 评论(0)

2014年VOA慢速英语(七)月

模拟有助于控制、管理交通

Simulation Helps Control, Manage Traffic 模拟有助于控制、管理交通 Controlling traffic is a complex and high cost problem in many developed countries. It becomes more difficult and costly with the ever-increasing number of cars on the road

发表于:2019-01-12 / 阅读(62) / 评论(0)

2015年VOA慢速英语(八)月

美国宇航局开发游戏：人人都能体验太空游

Star Rangers is an impressive astronaut simulation game created in collaboration with NASA which allows you to explore the solar system, land on planets, build base camps and go where no man has gone before. 《星际游侠》是一款美国国家宇航

发表于:2019-02-05 / 阅读(47) / 评论(0)

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alternate design basis

axial chromatic aberration