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底质；底材料
1、SU Bottom───SU底部
2、bottom drawer───<美>（妇女为结婚准备的）嫁衣
3、bottom───n.(Bottom)人名；(英)博顿；vi.到达底部；建立基础；vt.装底；测量深浅；查明真相；adj.底部的；n.底部；末端；臀部；尽头
4、at bottom───实际上（等于atthebottom）；adv.实际上; 说到底; 骨子里
5、bottom line───n.概要，账本底线；结果；概要；账本底线；关键
6、bottom view───底视图，仰视图；[机]底视图；[机]仰视图
7、bottom hole───底孔，下部孔；底孔，井底；下部孔；底部炮眼
8、material───n.材料；用具；（有指明特征的）人才；素材；曲目；布料；adj.物质的；身体需要的；和推理内容有关的；重要的；（证据或事实）决定性的；客观存在的；物欲的；n.(Material)（意、美）妈特力娅丽（人名）
9、river bottom───河底
1、Characteristic Analysis of Bathymetric Data for Different Types of Bottom Material───不同海底底质类型水深数据特征分析
2、The Analysis of Pollution Changing Trend of Heavy Metals in Hongze Lake's Bottom Material───洪泽湖底质重金属污染变化趋势分析
3、This article introduces the general investigation information about Xin Yun lake bottom material, makes a statistics and analysis of the results, and analyzes the correlation.───介绍了星云湖底质调查工作概况，统计和讨论了结果，并分析了关联度。
4、Said purifier can effectively absorb the action bottom material; and improve the photo-catalysis process to apply the deeply-purification treatment of micro-pollution water.───该净化器可有效吸附反应底物，促进光催化过程，使得其特别适合于微污染水源的深度净化处理。
5、The wetland of international importance this bottom material is management planning basis.───国际重要湿地的本底资料是管理计划编制的基础。
6、the phenol clearing capacity of bottom material has certain stability and the difference between different sections is smaller.───底质的净酚能力具有一定程度的稳定性，不同河段之间的差异性较小。
7、But the stress increase due to bottom material viscoelasticity is small in the model of this paper.───但在本文设定的构造模型框架和介质参数下，下层黏弹性的存在对上层母体的应力随时间的增加影响不大。
8、Sales: magnesia, magnesia brick, Meitanzhuan, bottom material, a special material that is not stereotypical fire-proof material, the light burning powder, steel.───销售：镁砂，镁砖，镁碳砖，炉底料，捣打料，不定型耐火材料，轻烧粉，钢材。
9、Qualitative Determination Methods of Paraffin in Bottom Material of Chafing Dish───火锅底料中固体石蜡的定性检测方法研究
1、This article introduces the general investigation information about Xin Yun lake bottom material, makes a statistics and analysis of the results, and analyzes the correlation.