查询词典 3-D

The key intermediate 3-methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods,formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction,and then hydr...

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The key intermediate 3- methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods, formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction, and then hydrolysis.

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The sound velocities of hydrous forsterite reduce by 3.1-7.1% and 3.6-9.7% respectively at 0-14 GPa with 3.2wt% water.

在0-14GPa的压力下，含3.2wt%水的镁橄榄石比不含水镁橄榄石的Vp和vs值分别降低了3.1-7.1%和

The yields of compounds 1, 2, 3, 4, and 5 based on furoin were 99.3%, 96.5%, 98.0% 99.4% and 98.7%, respectively.

醋酸糠偶姻酯(1)、月桂酸糠偶姻酯(2)、苯甲酸糠偶姻酯(3)、α-呋喃甲酸糠偶姻酯(4)和3-α-呋喃丙烯酸糠偶姻酯(5)的收率以糠偶姻计算，分别为99.3%、96.5%、98.0%、99.4%和98.7%。

Among them,the chemosensory properties of two molecular tweezers derived from diethoxycarbonyl glycoluril for metal ions were studied by fluorescent spectroscope.It was found that they both exhibited selective recognition towards Fe~(3+)among 13 metal ions investigated in DMF/CH_3OH(50:1, v/v)with fluorescence quenching,and formed 1:1 stoichiometry complex with Fe~(3+).

通过荧光光谱滴定考察了其中两个二乙基酯基甘脲分子钳异构体对13种不同金属离子的识别作用，研究表明在DMF/MeOH(50：1 v/v)中，它们能够很好地选择性地识别Fe~(3+)离子，与Fe~(3+)离子形成1：1的复合物并且呈现荧光淬灭效应，可作为Fe~(3+)的荧光化学传感器。

One day 3 brother touch mice together, the old says: Present mice medicine also is used without giving thought to, I ate 3 packets to also do not have what thing yesterday, the second says grouchily: You eat medicine of 3 packets of mice what to calculate, should true kongfu just cries fierce, I now is the body with not bad King Kong, present mice clincher is right a bit action is done not have for me, like placing me to put a fart on my body just like mosquito.

有一天老鼠三兄弟碰在一起了，老大说：现在的老鼠药也不管用啊，昨天我吃了3包也没有什么事，老二不高兴的说：你吃3包老鼠药算什么啊，要有真功夫才叫厉害，我现在是金刚不坏之身，现在的老鼠夹子对我来说一点作用都没有，夹我一下就象蚊子在我身上放了个屁一样。

Branchlets 1-3 mm in diam.; leaves nearly membranous when dry, sparsely hispidulous, midvein sparsely pilose, petiole 2-3 cm.

小枝1-3毫米直径；干燥时的近的叶膜质，疏生短硬毛，中脉的疏生柔毛，叶柄2-3 厘米 3 C。

Question for thinking: C hoose 3 natural numbers from 1 to 100. If the sum of them is a multiple of 3, how many kinds of selections can you get?

思考题：从1至100这100个自然数中取3个数，若这3个数的和恰为3的倍数，有多少种不同的取法？

Methods: The data of 6 cases with 9 hydronephrotic kidneys were studied retrospectively, 3 male and 3 female. The hydronephrosis appeared from 28 to 40 weeks of pregnancy.

对1996年至2005年收治的6例胎儿肾积水临床资料进行回顾性分析。6例中男、女各3例，发现肾积水时间为胎龄28~40周，左肾3例，双肾3例，共9只肾。

Results The distance from the anterior naris to the anterior wall of the sphenoid sinus was (65.36±3.58) mm and that to the bottom of the hypophyseal fossa was (79.18±3.71) mm.

结果 前鼻孔到蝶窦前壁的距离(65.36±3.58)mm；前鼻孔到蝶鞍底部的距离(79.18±3.71)mm；鼻后孔弓到颅底的距离(21.18±4.31)mm；后鼻孔弓到蝶窦开口的距离(13.22±3.36)mm。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。