1. 化学成分与GWP值 R513A由50%的HFO-R1234yf和50%的HFC-R134a混合而成，其GWP值在不同来源中存在差异： · 科慕公司标注为631，第三方 ...

Natural gas is a type of fossil fuel formed millions of years ago deep beneath the earth’s surface. Every year, the United States produces over 30 trillion cubic feet of natural gas. Natural gas ...

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Gold Price Forecast: Pulls Back After Record High, Eyes Key Supportabout 3 hours ago Natural Gas Price Forecast: Will $3.00 Hold or Lead to Lower Prices?about 4 hours ago NASDAQ Index, SP500 ...

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2-Year U.S. Treasury Note Continuous Contract $103.863-0.023-0.02% 5-Year U.S. Treasury Note Continuous Contract $108.320-0.039-0.04% 10-Year U.S. Treasury Note Continuous Contract $110.781-0.031 ...

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Gas prices have gone up by about 9 cents per gallon since this time last month but are still down by nearly 50 cents compared to this time last year. The national average fuel price is about $3.17 ...