研究人员们认为，生物膜具有双重作用，一方面它能够是菌落朝着营养源成群生长，同时它又能够阻止竞争菌落对于资源的掠夺。
Biofilm, the researchers think, could serve a dual function: it could help bacterial colonies grow toward resources as a collective swarm, and it might also help block out competing colonies.
断层是隐蔽圈闭成藏的关键因素，能起到沟通油源和侧向封堵的双重作用。
Fault is the key factor of subtle traps to oil accumulation, and has the function of linking reservoir and lateral sealing.
观测到复杂的线偏振结构：南部子源有双重结构，北部子源有三重结构。
Complex linear polarization structure has been detected. The south component is double, the north component triple.
结果提示，选育双重杂合子转基因后代小鼠，是一条提高转基因动物外源基因表达水平的有效途径。
These results indicated that the selection of double heterozygotes among offspring may be a useful way to improve the expression of exogenous genes in the transgenic animals.
目的成釉细胞瘤可能来源于牙源性上皮，因此成釉细胞瘤细胞可能具有成釉细胞和肿瘤细胞的双重特性。
Objectives ameloblastoma is believed to be originated from the odontogenic epithelium, thus the ameloblastoma cells might characterize the ameloblasts and the tumor cells as well.
认为火山岩的成分分异受斜长石在岩浆源区熔融残留和岩浆形成后黑云母的结晶分离双重控制。
The chemical variation of the volcanics are controlled by both residual of plagioclase in the melting source area and crystal fractionation of biotite after magma formation.
揭示了不同岩石组合谱系类型成矿花岗岩类的岩浆源岩主要是地壳物质，具有地幔和地壳双重物源的特征。
It is revealed that the source of different types of metallogenetic granitic assemblages is mainly crustal materials, with mantle material adding.
对其矿床地质特征、同位素地质学、矿床成因等方面研究，认为成矿物质来源具双重性，既有来源于地层，又有来自壳幔源岩浆。
Studies on geology, isotopes and metallogenesis indicate that the ore forming material derived from strata and magma derived from crust mantle.
因此水污染控制必须以点源污染和农村生活面源污染为双重控制目标。
Therefore, the primary pollution control objective must be point source pollution and diffuse source of domestic wastewater in rural areas.
因此水污染控制必须以点源污染和农村生活面源污染为双重控制目标。
Therefore, the primary pollution control objective must be point source pollution and diffuse source of domestic wastewater in rural areas.
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