查询词典 column

Silica gel column and reversed-phase C-18 column were employed to purify and separate monohydroxy intermediates.

此外，对DKR催化双羰基底物还原得到的3R，5S-双羟基产物进行纯化，再通过羟基保护和保护基的去除，以用于他汀类药物的手性侧链制备。

The content of naphthalin in circulating wash oil was determined by capillary column gas chromatography with DB-1 capillary column and FID detector.

采用DB-1毛细管柱和FID检测器，以毛细管柱气相色谱法测定循环洗油中的萘含量。

GC Analysis of Alachlor·Acetochlor·Atrazine 42% SE CAO Ying, SHI Xin-jin (Sanonda Zhengzhou Pesticide Co. Ltd., Zhengzhou 450009, China) Abstract: A method was introduced for the determination of alachlor, acetochlor and atrazine by GC With CP-7906 capillary column and FID detector, the internal standard was nonadecane. The three compositions were analyzed easily in the same condition and column.

42%甲草·乙·莠悬乳剂的气相色谱分析曹颖，师新进(沙隆达郑州农药有限公司，郑州 450009)摘要：采用气相色谱法，在CP-7906毛细管柱上以正十九烷作内标，用FID检测器测定甲草胺、乙草胺和莠去津的含量。

By use of octadecyl (C18) column made in China, a RP-HPLC method was studied using phenylisothiocyanate as the pre-column derivatizing reagent for the determination of amino acids.

采用国产C18反相柱，对以异硫氰酸苯酯为柱前衍生化试剂的高效液相色谱测定氨基酸的方法进行了研究。

The traditional transformer online monitoring system generally adopts oxygen carrier gas, chromatographic column. And the equipment is not simple with many shortages such as periodic calibration of chromatography column and sensor, low reliability of equipments and overelaborate detection procedure of gas composition.

由于变压器传统的在线监测系统一般采用色谱柱，需要消耗氧气和载气，而且色谱柱和传感器需定期标定，装置可靠性不高，检测气体成分过程繁琐，因此第6章根据比尔-朗伯特(Beer-Lambert)定律，按照光纤气体差分吸收的原理，设计了一套基于光纤气体传感器的变压器在线监测系统。

The story drift can be represented by the drift of a typical beam/column sub-assemblage. Introducing the plastic deformation distribution factor x as a parameter, the relations among x, displacement ductility ratio μ〓 and column overstrength factorη〓, i. e. the x－μ〓－η〓 equations are presented.

提出用框架节的侧移要求来等效框架的层间位移要求，引入塑性变形分布因子x的概念，建立了x与位移延性系数μ〓、强柱系数η〓之间的关系，即x-μ〓-η〓关系。

Methods Rhizoma Gastrodiae, Pellis Ovis, and Calculus Bovis Sativus in Tianhuang Houzao powder were identified by TLC. The content of Gastrodin in the powder was determined by HPLC. The HPLC condition was as follows: column was Phenomenex C18 (4.60 mm×250 mm, 4 m), the mobile phase consisted of methanol-0.05% phosphoric acid (3:97), the UV detection wavelength was at 220 nm, the flow rate was 1.0 ml/min with column temperature at 25℃.

用薄层色语法鉴别天黄猴枣散中天麻、猴枣、体外培育牛黄；用高效液相色谱法对制剂中天麻素进行定量分析，Phenomenex C18 (4.60 mm×250 mm， 4 m)色谱柱，流动相为甲醇－0.05%磷酸溶液(3：97)；检测波长220 nm，流速1.0 ml/min，柱温25 ℃。

This column shall be defined as the TAIL, and the next column of pais is called the HEAD.

这时，和掷骰点数相符的一栋牌得称为&牌尾&，而再往前点算的另一栋牌得称为&牌头&。

The process of the present invention consists in bringing into contact, on the one hand, gaseous phosphorus pentafluoride or a gaseous mixture comprising phosphorus pentafluoride and hydrochloric acid, and, on the other hand, a solution of lithium fluoride in hydrofluoric acid, in a column (10) having a sufficient number of transfer units to carry out the reaction of PF5 with LiF under the chosen conditions of temperature, of pressure and of molar ratio of the two contrasting reactants and with complete or substantially complete absorption of the PF5 in the column.

本发明方法是让气态五氟化磷或五氟化磷与盐酸的气态混合物与氟化锂的氟氢酸溶液在塔（10）中接触，该塔转化单元数足以在选定温度、压力与两种反应剂摩尔比条件下使PF5与LiF反应，塔中五氟化磷完全或基本完全被吸收。

Different chromatographic parameters including elution profiles, column temperature were investigated in order to optimize separation conditions of different fatty acid phenacyl ester derivatives. A gradient elution using methanol/acetonitrile (90:10, V/V)-water as mobile phase at 0.35 mL/min, detection wavelength at 246 nm, and column temperature of 35℃ were chosen.

经优化确定以(90：10)-水为流动相梯度洗脱，在检测波长246 nm，柱温35℃，流速0.35 mL/min的色谱条件下，18 min内能完成对13种脂肪酸衍生物的分离检测。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了