The minerals, calcium, and sulfur were at the bottom of the ocean.
矿物质、钙以及硫磺均存在于海洋底部。
This study attempts to discuss interregional modeling for the abatement of sulfur dioxide and carbon dioxide emissions in China by the approach of combining top-down modeling with bottom-up modeling.
本研究试图探讨用“自上而下”和“自下而上”相结合的建模方法，对我国二氧化硫和二氧化碳减排进行区域间建模。
Less the initial sulfur content is in the bottom hole, closer the sulfur separation place is to the wellhead.
气体在井底时的初始含硫量越小，则越靠近井口位置析出；
Less the initial sulfur content is in the bottom hole, closer the sulfur separation place is to the wellhead.
气体在井底时的初始含硫量越小，则越靠近井口位置析出；
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