单词：casing-pressure gas lift valve
单词：casing-pressure gas lift valve 相关文章
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午后咖啡
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Think about flying and you no doubt think about air--the wind in your face, the wind at your back, the wind beneath your wings. Now physicists note that li
Scientific American(十二)月
By Bill Gasperini Sakhalin, Russia 20 October 2006 A giant energy project on Russia's remote Sakhalin Island has recently come under scrutiny because of environmental concerns. A foreign run consortium has long been building parallel gas and oil pip
2006年VOA标准英语（十月）
There would soon be an explosion; the kettle would be burst open. It is in this way that boiler explosions are often caused. When there is too much steam in a boiler, and it cannot get out, it presses against the sides of the boiler, until at last th
英国学生科学读本
6. Smiling Lowers Your Blood Pressure When you smile, there is a measurable reduction in your blood pressure. Give it a try if you have a blood pressure monitor at home. Sit for a few minutes, take a reading. Then smile for a minute and take another
实用英语
微笑面对自己的理由（下） 6. Smiling Lowers Your Blood Pressure When you smile, there is a measurable reduction in your blood pressure. Give it a try if you have a blood pressure monitor at home. Sit for a few minutes, take a reading. Then
实用英语