三体染色体

New Solar Cell Minimizes Environmental Risks in Manufacturing Process 新的太阳能电池减少生产中对环境的危害 Scientists in England report the development of a new solar cell that minimizes environmental risks in the manufacturing proc

发表于:2018-12-08 / 阅读(60) / 评论(0) 分类 VOA标准英语2014年(六月)

娜塔莎贝丁菲尔德(Natasha Bedingfield)全美流行单曲榜冠军曲,英国金榜冠军曲,格莱美奖与全英音乐奖的提名,全球超过600万张的唱片销售,Natasha Bedingfield无疑是21世纪英国流行乐坛的骄傲

发表于:2019-01-10 / 阅读(49) / 评论(0) 分类 英乐时空

Large Windows Could Capture Solar Energy 利用大窗户吸收太阳能 Solar cells have been around since the 1950s. But now there is a race to develop transparent solar cell that can cover windows of buildings and still capture the suns light for e

发表于:2019-01-12 / 阅读(56) / 评论(0) 分类 2016年VOA慢速英语(八)月

Paintable Solar Cells May Replace Silicon-Based Devices 可喷涂太阳能电池可能取代硅基电池板 Solar panels are manufactured in factories. Some of the devices are made with cadmium chloride, a substance shown to be harmful to human healt

发表于:2019-01-12 / 阅读(58) / 评论(0) 分类 2015年VOA慢速英语(十)月

PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is

发表于:2019-02-15 / 阅读(27) / 评论(0) 分类 英语时差8,16

娜塔莎贝丁菲尔德(Natasha Bedingfield)全美流行单曲榜冠军曲,英国金榜冠军曲,格莱美奖与全英音乐奖的提名,全球超过600万张的唱片销售,Natasha Bedingfield无疑是21世纪英国流行乐坛的骄傲。

发表于:2019-02-19 / 阅读(65) / 评论(0) 分类 美国乡村音乐