查询词典 preparative

This article gives us a detail analyzing on pyroelectric effect and refrigerant principle,at the same time,By means of zone melting preparative process and technological process,it introduces us the preparation method of semiconductor materia

根据半导体制冷材料热电的制冷特点、热电效应以及制冷原理进行了分析，并通过区熔法制备流程、工艺介绍了半导体制冷材料的制备方法。

Along with vehement market competition, the technical request that relates to exploit banausic and advanced network resource management is put forward,How to increase the operational level of the telecommunication network everywhere, how to complete the communication guarantee responsibility given from the superior, how to keep the high level service quality, how to manage the equipments of the different manufactory in unification, moreover how to carry through the assistant decision-making that relates to feasibility and maneuverability of the preparative scheme of the emergency communication base on the network resource.

随着市场竞争的加剧，对开发实用、先进的网络资源管理技术提出了要求，如何提高各地电信网络的运营水平，完成上级赋予的通信保障职责，保持高水平的服务质量，统一管理不同制造商的设备，并在网络资源的基础上进行战备通信应急预案的可行性与可操作性的辅助决策；如何综合运用计算机科学、通信技术、地理信息系统的理论和方法对已投产运营的或将建设的网络相关信息进行有效管理，改善和提高调度、指挥效率，更加有效地管理和分配整个网络资源；如何使网络资源管理从单项的、人工的、独立的、局部的和数据的，走向综合的、智能的、统一的、整体的和可视化的，从而充分地发挥通信设备的作用，及时准确地为重要客户提供必要的通信保障；成为当前人们所关注并迫切希望得到解决的问题。

Five representative compounds were isolated as QC and biolocial study standards from three different species of Aloe by using preparative HPLC, CCC and other routine chromatography methods: Aloesin, Aloeresin A, and Barbaloin from dried latex of the leaves of A.

五、代表性化合物孤立御用biolocial从三个不同物种研究水准芦荟用制备高效液相色谱刑法和其他日常色谱方法：芦荟、芦荟一、由芦荟、晒干的叶甲ferox胶乳、从aloenin全脂芦荟、芦荟叶电子甲从干果皮的纯度和化学结构的色色谱和光谱方法证实。

Objective To explore the effects of continuous W-shaped small incision in surgical treament of bromidrosis,in order to preparative popularize in clinic.

目的 探讨连续W形小切口手术治疗腋臭的疗效，为其推广应用作准备。

Objective To explore the effects of continuous W-shaped small incision in surgical treament of bromidrosis,in order to preparative popularize in clinic.Methods All patients with bromidrosis were treated by a surgical technique with continuous W-shaped small incision.Incise the skin along flank of armpit hair,then,separable skin from subcutaneous tissue,to resect the adipose tissue,hair follicle ,apocrine gland and compress packet.

目的 探讨连续W形小切口手术治疗腋臭的疗效，其推广应用作准备方法采取连续W形小切口切开腋毛区外侧皮肤，然后分离腋毛区范围内皮肤与皮下组织，剪除脂肪颗粒、汗腺组织和毛乳头等皮下组织并加压包扎，术后使用红外线仪照射术区皮瓣和口服抗生素。

High-speed countercurrent chromatography is reported for the preparative isolation and purification of a chromone from aloe vera. The crude extract was obtained by a series of pretreatment of aloe vera leaves and extracted from decolorizing active carbon with methanol.

以芦荟全叶为原料，经过一系列的预处理手段，从脱色剂活性炭中获得芦荟色酮粗提物，再经过溶剂分配和富集后采用高速逆流色谱对其中的色酮成分进行分离纯化。

The ethanol extract was dissolved with HCl, the acidic extract was basified to pH9-10 with NH_3-water and extracted with CHCl_3 to give total alkaloids. five alkaloids were isolated with column chromatography and preparative thin-layer chromatography, and three of them were identified as dehydrocorydaline、 corynoline and dihydrosanguinarine on the basis of spectral analysis MS,~1H-NMR,~(13C-NMR and physicochemical properties. All of them were found for the first time from this plant.

为研究灰绿黄堇的化学成分，本文将灰绿黄堇乙醇提取物采取酸提取、碱游离后萃取的方法得到总生物碱，然后利用柱色谱、制备薄层色谱等方法分离、纯化了灰绿黄堇中5种生物碱，并利用IR、MS、~1H-NMR、~(13)C-NMR等方法鉴定了其中的3种，分别为去氢紫堇碱、紫堇灵、二氢血根碱，均为首次在此植物中发现。

This paper introduced a new preparative method of sodium diacetate within one step and the mate technique of SSDA .

本文采用一步法合成双乙酸钠，介绍了增效双乙酸钠的复配工艺，同时测试其防霉效果。

First, this research developed a set of simple and effective technologies for preparative extraction and separation of flavonoid and phloridzin from Lithocarpus polystachyus, which includes:(1) Microwave-assisted extraction of flavonoid f...

本研究首先研发出一套简单、有效的制备性提取分离多穗柯黄酮类及其根皮苷工艺，这套工艺包括：(1)微波辅助氢氧化钙水溶液提取多穗柯黄酮，最佳工艺条件为用1.2 %氢氧化钙水溶液为提取液，料液比1：12，预煮时间5min，微波功率800W处理25min。

First, this research developed a set of simple and effective technologies for preparative extraction and separation of flavonoid and phloridzin from Lithocarpus polystachyus, which includes:(1) Microwave-assisted extraction of flavonoid from tender leaves of Lithocarpus polystachyus Rehd. The extraction conditions are as the follows, 1.2 % of Ca2 water solution, solid-liquid ratio of 1:12, pre-boiling for 5 min, 800 W of microwave treating for 25 min.

本研究首先研发出一套简单、有效的制备性提取分离多穗柯黄酮类及其根皮苷工艺，这套工艺包括：(1)微波辅助氢氧化钙水溶液提取多穗柯黄酮，最佳工艺条件为用1.2 %氢氧化钙水溶液为提取液，料液比1：12，预煮时间5min，微波功率800W处理25min。

It's not quite as simple as that.

并没有那么容易。

It debuted in 1992 in Japan and the United Kingdom, and 1993 in the United States.

它首次亮相于1992年在日本和英国，在美国1993年。