例句與造句

1. The southern hainan mafic dykes are strongly enriched in lile with high nb / ta ratios , indicating a magma source reconstructed by silicic - melt through partial melting of ancient subducted slides . however , the northern hainan mafic dykes with chondritic nb / ta ratio should be derived from the fiuid - metasomatized mantle related to ancient subduction zone
   瓊南基性巖脈強烈富k _ 2o等lile和具有較高nb ta比值，其地幔源區(qū)應受到了古俯沖板片部分熔融形成的硅質(zhì)熔體的改造；而瓊中基性巖脈的nb ta比值接近于球粒隕石和morb值，應為古俯沖帶含水流體交代的地幔源區(qū)的產(chǎn)物。
2. The paper based on synthesize domestic and foreign ' s study achievement about basalt , systematical review basalt research history , present condition about basalt formation contributing factor and it ' s magma source area quality , uses the basalt to distinguish the earth ' s mantle type , the connection basaltic magma evolution and continent dynamics , and uses the basalt to distinguish tectonic environment
   系統(tǒng)地綜述了玄武巖的成因和巖漿源區(qū)性質(zhì)、利用玄武巖判別地幔類型、玄武質(zhì)巖漿的演化與大陸動力學關系，以及判別構造環(huán)境等方面研究的現(xiàn)狀。
3. It's difficult to find magma source in a sentence. 用magma source造句挺難的