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主要层
1、layer───vt.把…分层堆放；借助压条法；生根繁殖；将（头发）剪成不同层次；n.层，层次；膜；[植]压条；放置者，计划者；vi.形成或分成层次；[植]通过压条法而生根
2、main───adj.主要的，最大的，最重要的；n.(Main)（美）梅因（人名）；n.（输送水、煤气等的）总管道，主管道；(themains)（水、电等的）供应，供应XiTong；电源插座；海洋，公海；主帆（mailsail的简称）；（掷骰子游戏中）叫数；斗鸡比赛
3、main scene───主要景点；主场景；主体现场
4、outer layer───外层（细胞次生壁外面的一层）
5、decarburized layer───[化工]脱碳层
6、main objectives───主要目标
7、mucus layer───粘液层
8、clayey layer───粘土层
9、dense layer───[医]致密层
1、main layer is Putaohua Formation, deposited in the transition zone from a large delta front to lake in northern Songliao Basin.───主要含油层位是葡萄花油层，沉积时期处于松辽盆地北部大型三角洲沉积体系的前缘相带到湖相的过渡带上。
2、At last, analysis the relationship of fault and sedimentary facies between the the exhibition of the sand body of main layer.───同时分析、总结了断层和沉积相对砂体展布的控制作用。
3、A main layer would be scanned every couple of weeks, but sites that didn't change much wouldn't be crawled anywhere near as often.───旧XiTong把互联网分成许多阶层，每层的更新速度不同，一些主要阶层每两周更新一次，但那些变化不大的网站就不会被及时更新。
4、In line with the single main layer, severe watered out and production reduction occurred after well pattern thickening, a new way must be used to solve the previous problems.───温西六区块在井网加密滚动调整后出现的主力层单一、并严重水淹、产量大幅度下降等问题，必须寻求一种新的方法来解决上述出现的开采矛盾。
5、These applications comprise the fourth main layer of the OGSA architecture.───这些应用程序构成了OGSA架构的第四个主要的层。
6、The main layer is Putaohua Formation, deposited in the transition zone from a large delta front to lake in northern Songliao Basin.───主要含油层位是葡萄花油层，沉积时期处于松辽盆地北部大型三角洲沉积体系的前缘相带到湖相的过渡带上。
7、Middle Jurassic is the main layer system of hydrocarbon source rocks which develops widely in the Delingha depression.───柴达木盆地德令哈拗陷中侏罗统广泛发育，是该区主要的烃源岩层系。