单词：unbalanced earth fault capacitance current
单词：unbalanced earth fault capacitance current 相关文章
18 Experiencing an Earthquake GLOSSARY earthquake a short period of time when the ground shakes because ofgeological movements deep below the surface, often causing damage, injuries,and/or death * People living in southern California experience many
2010年ESL之日常生活
Ground - Connecting the Earth to electrical equipment with a conductor. This is done so current overloads (perhaps due to a lightning strike) can be safely diverted to the Earth. Ground Fault Circuit
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Earth's Surfaces Are Always Moving 地球表面一直在运动 From VOA Learning English, this is Science in the News. Im Anna Matteo. And Im Christopher Cruise. Scientists who study the Earth tell us the continents and ocean floors are always moving
2014年VOA慢速英语(四)月
This was a very shallow earthquake, which means it would tend to be more destructive. Stuart Sipkin, USGS Tuesday's earthquake hit Haiti hard, with extensive damage and many casualties. Compared to the well-known seismic areas like the Pacific Rim, t
VOA标准英语2010年(一月)
Scientists say the surface of the Earth is cracked like a giant eggshell. They call the pieces tectonic plates. As many as twenty of them cover the Earth. The plates float about slowly, sometimes crashing into each other, and sometimes moving away fr
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VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Steve Ember. Scientists who study the Earth tell us that the continents and ocean floors are always moving. Sometimes, this movement is violent and mig
2010年慢速英语(一)月