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Objective: To establish a colorimetric method for the content determination of ephedrine hydrochloride in compound preparation.

目的：建立比色法测定复方制剂中盐酸麻黄碱含量。

As a special case, a scheme of joint remote preparation of a single-qutrit equatorial state is presented in detail.

作为一种特殊情况，详细给出了单粒子三维赤道量子态的几率联合远程制备方法。

The present invention relates to an equisetum pratense total alkaloid and its application in preparation of medicine with sedation and stabilization.

本发明为一种植物中提取的成分对中枢神经系统的抑制作用及作用机制，这种成分为从草问荆中提取的草问荆总碱，这种作用表现为镇静、安定作用。

The preparation process of equisetum pratense total alkaloid includes the following steps: coarse pulverizing equisetum pratense to obtain rough powder, methyl alcohol percolation to obtain percolate, recovering methyl alcohol, concentrating, degreasing by means of petroleum ether, alkalifying concentrate, CHCl3 extracting, soda lye washing, neutral water washing, recovering CHCl3 to obtain rough alkaloid, adsorption by using silica gel column, eluting, recovering solvent so as to obtain refined EPR.

该发明是通过两个步骤来实现的：第一步，提取草问荆总碱，流程：草问荆粗粉――渗漉液――浓缩液(析胶、石油醚脱脂、氨水碱化)――碱化浓缩液(CHCl3萃取)――CHCl3层――CHCl3液(回收CHCl3)――粗生物碱――吸附硅胶柱――精致EPR。第二步，选择实验试剂、仪器、用小鼠作为实验对象，进行中枢神经系统实验，研究作用及作用机制。

Background. The use of the erbium, chromium:yttrium-scandium-gallium-garnet laser has become accepted in the field of cavity preparation.

这一由奥地利科学家进行的研究证明，通过发展小型化、柔韧的纤维就可以使激光用于牙髓方面的治疗。

To become an Essene there was a period of preparation and purification that extended over three years.

成为一个艾赛尼派教徒要准备很长时间和超过三年以上的净化时期。

Precipitation is not only an essential parameter in hydrology and in the research of water resources, but also important for the flood control of the valley and the preparation against it, as well as the construction of hydraulic and hydropower engineering.

降雨量不仅是水文和水资源研究中的一个重要参数，而且对于流域的防洪减灾和水利水电工程建设也具有重要的意义。

It was studied in this thesis the preparation of Artemisia glue, under the condition of alkali, chloroacetic acid was used as etherification agent and the properties, structures and application in quick-frozen dumpling were researched too.

本论文主要研究了以沙蒿胶为原料，氯乙酸为醚化剂，在碱性条件下合成羧甲基沙蒿胶的工艺，并研究了羧甲基沙蒿胶的性质、结构及其在速冻水饺中的应用。

Amphoteric tapioca starch with carboxyl groups was produced via crosslinking, oxidation and etherization reactions. The product was then characterized by means of SEM, XRD and colloid titration, with the preparation mechanism being also investigated.

采用交联、氧化和醚化反应制备羧酸型两性淀粉，通过扫描电子显微镜、X射线衍射、胶体滴定等方法对该淀粉进行表征，并研究了该两性淀粉的合成机理。

Transformation of Chinese political culture from tradition to modernization.The preparation stage of Chinese modernization (1840-1949) is the time when ethnicism was developing and modem ethnic countries took their forms finally.

第二章、中国传统政治文化向现代政治文化演变中国现代化的准备阶段(1840-1949)，正是民族主义不断成长和现代民族国家最终肇建的过程。

We are interested in your suggestions about appointing us to be the single dealer.

对贵方建议由我方担任独家经销商一事，我们颇感兴趣。

Three types of empty-shell marriages have been identified. In a devitalized relationship husband and wife lack excitement or any real interest in their spouse or their marriage.

一种是死气沉沉的婚姻：在这种婚姻关系中夫妻俩对于配偶或婚姻缺乏激情，或者缺乏真正的兴趣。