取代的

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制双通道反渗透系统——取现有自动电镀脱离子剂。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到较满意中位取四苯基卟啉(H2TPP)分子构型。

A new chelatometry has been applied to measure molybdenum quantities of molybdenum disulfide lubricant,replacing the traditional weight method.

出新螯合滴定法测定二硫化钼量,用以取传统重量法。

Synthesis of alkylated chlorosilane by Grignard reagent has been investigated,which provides a good way for preparation of organo-silicon compounds.

本文研究用格氏法制备烷基取氯硅烷方法,为有机硅化合物研制一个较好途径。

Carbasugars,carbocyclic analogues of true sugars,are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group.

碳环糖是一类呋喃或吡喃糖环中氧原子被亚基取后形成糖类似物。

Two kinds of bis-hydroxyalkyl or bis-methyl formylate subtituted bis-ethylenedithio-tetrathiafulvalenes (BEDT-TTF) and their charger-transfer complexes (CT-complexes ) with TCNQ were synthesized.

合成带双羟烷基及双酸酯基取种双二硫亚乙基四硫富瓦烯(BEDT-TTF)衍生物及其它们与TCNQCT-络合物。

In this thesis, the carbozincation of acetylenic sulfones and its applications in the stereoselective synthesis of polysubstituted olefins were investigated.

本论文研究炔基砜碳锌化反应及其原位产生α-磺酰基烯基锌试剂在立体选择性合成多取烯烃中应用。

Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.

本文报道种中位为苯并冠醚亚单元取含稠合外环硼-二吡咯亚基染料合成、光谱和电化学性质。

It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.

坚牢度和光谱特性,发现磺酰胺基和在它氮原子上取基会影响该类染料性能。

The synthsis methods of N-sulfuryl substitude hetercycles by the reaction of alkyne with sulfamide catalyzed by diverse transition mentals were reviewed in this paper.

概述不同过渡金属催化下通过炔基和磺酰胺基反应,形成N-磺酰基取杂环化合物。

BOLS Coffee delivers a full coffee flavour built on a rum distillate base, making BOLS Coffee arguably the most mixable of all coffee liqueurs.

波士咖啡以朗姆酒为基酒,散发出浓郁咖啡香味,波士咖啡利口无疑可以取所有咖啡利口酒.

Instead of being fueled by sugar, as it usually is, it begins to metabolize fat-derived molecules called ketone bodies, hence the term ketogenic diet.

由脂肪转变而来分子—酮体，取通常糖，开始为大脑新陈谢功能。因此术语称之为生酮饮食。

The phosphate, vanadate and bismuthate contained glasses are promising candidates for the substituting of the lead glasses currently most used by the electronic pastes.

磷酸盐、钒酸盐、铋酸盐玻璃体系是目前含铅低熔玻璃取物。

Nitro 1,2,4 triazole 5 one(NTO)can be obtained by nitrating 1,2,4 triazole 3 one (TO) under different conditions,and nitrobenzyl derivatives of TO are prepared as well.

研究1，2，4三唑酮3（TO）衍生物合成，结果表明TO在多种硝化条件下均可制得3硝基1，2，4三唑酮5（NTO），同时还合成TO二取硝基苯衍生物。

Based on the design for the program to process leveling data with mobile phone in Yixian Seismostation, the feasibility to replace PC1500 with mobile phone is studied.

摘要通过易县地震台水准数据处理手机程序设计，研究用手机取PC1500可行性。

The aurone compounds are generally on one plane ,and they have a bigger conjugate system .The inducement of hydroxyl substituents has little influence on their own geometries .

橙酮类化合物分子共面性较强,为较大共轭体系,取羟基接入,对橙酮类化合物共面性影响不大。