Triassic Yanchang deltaic oil-gas located in east of basin with two kinds of oil-gas reservoir sequence, the lacustrine facies delta foreset sand body and plain distributary sand body.
二是上三叠系延长组三角洲油气区，主要位于盆地东部，具有湖相三角洲前积砂体和平原分流河道砂体两种油、气藏序列。
It is shown that properties of green sand vary with charging sequence and mulling time.
结果表明，型砂各性能均随加料顺序和混砂时间的不同而变化。
The transportation sequence of sulfadiazine in the tested soils was sand>clay>loam.
通过动态土柱淋溶实验研究了磺胺嘧啶在土壤环境中的纵向迁移行为。
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