查询词典 extraction

Hydroxylamine hydrochloride (NH2OH·HCl) was selected to extract manganese oxides, and sodium dithionite (Na2S2O4) was used to separate manganese oxides and iron oxides. Optimum extraction conditions were determined by changing each of the experimental condition.

参考人工培养生物膜的萃取方法，分别用NH2OH·HCl和Na2S2O4为萃取剂选择性萃取生物膜上的锰氧化物和铁、锰氧化物，通过改变各萃取条件，考察萃取效果，确定最佳条件。

Resulting the extraction technology of artificial culturing biofilms, the hydroxylamine hydrochloride （NH2OH · HCl） was selected to extract manganese oxides, and sodium dithionite （Na2S2O4） was used to separate manganese oxides and iron oxides.

参考人工培养生物膜的萃取方法，分别用NH2OH·HCl和Na2S2O4为萃取荆选择性萃取生物膜上的锰氧化物和铁、锰氧化物。

Resulting the extraction technology of artificial culturing biofilms, the hydroxylamine hydrochloride (NH2OH·HCl) was selected to extract manganese oxides, and sodium dithionite (Na2S2O4) was used to separate manganese oxides and iron oxides.

参考人工培养生物膜的萃取方法，分别用NH2OH·HCl和Na2S2O4为萃取剂选择性萃取生物膜上的锰氧化物和铁、锰氧化物。

Resulting the extraction technology of artificial culturing biofilms, the hydroxylamine hydrochloride (NH_2OHHCl) was selected to extract manganese oxides, and sodium dithionite (Na_2S_2O_4) was used to separate manganese oxides and iron oxides.

用选定的最佳条件对不同时间和地点采集的生物膜进行萃取，发现对目的组分的萃取率可达70.8%~94.6%，而对非目的组分的影响很小(3.3%~11.0%)，满足萃取分离的要求。

Optimum extraction conditions were selected by the condition experiments and the concentration of Cu, Pb, Zn in main components were also determined for revealing the distribution of the heavy metals in the suspended particulate matters. It was found that hydroxylamine hydrochloride (0.006 mol/L NH2OH·HCl+0.01 mol/L HNO3) can remove most of Mn oxides, and sodium dithionite 0.8 mol/L Na2S2O4

结果表明，0.006 mol/L NH2OH·HCl+0.01 mol/L HNO3萃取30 min可以单独萃取悬浮颗粒物中大部分的锰氧化物，0.8 mol/L Na2S2O4（pH=6.0）萃取40 min可以同时萃取铁、锰氧化物，而对非目的组分的影响较小；悬浮颗粒物对Cu、Pb、Zn重金属有明显的富集作用，其中Cu主要结合在悬浮颗粒物的有机质组分中，Pb主要富集在铁、锰氧化物中，锰氧化物和有机质对Zn的分布起主要的富集作用。

A feature extraction and retrieval algorithm based on childblock partition and area division using discrete cosine transformation and singular value decomposition is proposed.

提出一种在子块分割和区域划分的基础上，利用离散余弦变换和奇异值分解对图像进行特征提取的检索算法。

The results of experiment show the optimal extraction condition of Gardenia Yellow: refluxing and extracting three times with 50 percent ethanol in 55℃, water-bath and extracting 4 to 5 hours, Gardenia Yellow extract solution is separated by X-5 absorption resin, and then with 30 percent ethanol, getting Geniposide white crystal, the determining purity by HPLC come to 99.1% and can be used as standard, the part doffing by 70% ethanol can be concentrated to get more pure Gardenia Yellow pigment.

实验证明了栀子黄的最佳提取条件：50%的乙醇回流提取3次，55℃水浴加热，提取时间为4-5个小时。栀子黄提取液经X-5大孔吸附树脂分离，用30%乙醇溶液洗脱，纯化得到栀子苷白色晶体，HPLC检测纯度达99.1%，可做标准品使用。70%乙醇洗脱部分浓缩可得栀子黄产品，精制后产品纯度有显著提高。

Yiyang city, the project relies on basic geographic information and data, integrating processing, extraction transportation, water systems, residential areas, as part of state and other government applications, and the community with the closely related elements of the contents of the expansion of geographical names / address data, information technology-oriented requirements and the various departments needs arising from restructuring, development of network-based geographic information system, public services, the formation of Yiyang City unique, authoritative, universal coverage of the city's domain, multi-scale seamless integration of geographic information common platform.

项目依托益阳市基础地理信息数据，整合加工，提取交通、水系、居民地、境界等一部分与政务应用和社会应用紧密相关的要素内容，扩充地名/地址数据，进行面向信息化要求和各部门需求的数据重组，开发网络化的地理信息公共服务系统，形成益阳市唯一的、权威的、通用的覆盖全市域、多尺度无缝集成的地理信息公共平台。

Taking distributed control system used by 220t/h circulation fluid bed boiler and 25MW double extraction condensing turbine as examples,aiming at the problems exiting in distributed control system,from the aspects of improving safety,generality,flexibility,control performance,integrative management ability,being easy to use and maintenance,adopts a serial of new ways and strategies,makes it being into the new control system which other control systems can't compare with.

以220 t/h 循环流化床锅炉及25 MW双抽凝汽式机组所使用的分散控制系统为例，针对分散控制系统在应用中所存在的问题，对该控制系统在提高安全可靠性、通用灵活性、最优控制性能、综合管理能力以及方便使用与维护等方面，采取了一系列新的方法与策略，使之成为其他控制系统无法比拟的新一代控制系统。

Then SAM precipitation was carried out by picric acid and SAM precipitated is higher than 90％. After butanone extraction, acetone precipitation and SAM sulfate or SAM double salt of sulfate and p-tosylate formation, the stable SAM salt was obtained.

结果表明，苦味酸是一种选择性较好的沉淀剂，沉淀步骤得率在90％以上，制备SAM的硫酸盐的总得率在60％以上，而硫酸对甲苯磺酸双盐的得率在50％以上，产物的纯度达到了95％以上，已经达到了国外同类产品的质量指标。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐