应时的

In our work, as a preliminary experiment, the N-phenacylisoquinolinium bromide was reacted with methlhydrazine in refluxed acetic acid. Unexpectedly, 2-methyl-1,2,3-triazole was obtained. The further study of this reaction led to a more simple starting material,α-bromoacetophenone to react with methylhydrazine, obtaining the same product.

我们在研究N-苯乙酰异喹啉溴化物与甲肼在冰醋酸中的反应时，意外地得到了2-甲基-4-苯基-1，2，3-三氮唑，经过进一步的研究发现α-溴代苯乙酮与甲肼也能得到同样的产物。

The measurement of apparent volume change is described during cure reaction of a new spiro ortho -carbonate, 3, 9, di (p-methooxybenzyl)- 1, 5, 7, 11-tetraoxspiro (5,5) undecaneand epoxy resin, and the volume expansion ratio of this new monomer is culcu-lated,and its applications are approached.

叙述了新的螺环化合物3，9-二-1，5，7，11-四氧杂螺环[5，5]十一烷与环氧树脂进行固化反应时，其表现体积变化率的侧定方法，推算了这种新单体的体积膨胀率。

The reaction involving the oxidation of thiamine by Hg2- in basic solutions to fluorescent thiochrome was studied.

目前国产的荧光光度计上几乎没有配置流通池，这给荧光速率法的研究带来了很大的不便，尤其是在研究快反应时，容易产生

The same crystals can be produced when the thickness of 20％PAC and the thicknessof 40％Polymeric Titanic Sulfate or 30％PAC and 50％Polymeric Titanic Sulfate havereacted. It have noncrystal matters which resemble crystal of organic macromolecule in thecrystals.

浓度为20％和30％的PAC分别与40％和50％的聚合硫酸钛反应时，可以得到同种晶体，晶体中存在与有机高分子晶体相似的非晶结构。

When ATRP of styrene was investigated with 1-phenylethyl bromide/benzyl a,a-dibromide mixture as initiator, the GPC chromatogram shows two elution peaks and the molecular weighs of the peaks are approximately in a 2/1 ratio. It suggests that benzyl dibromide is a difunctional initiator of ATRP of styrene. The analysis of end group using 1H-NMR also proves the result above.

采用1-苯基溴乙烷／α，α-二溴化苄混合引发剂进行苯乙烯的ATRP反应时，所得聚苯乙烯的GPC谱图为双峰，分子量相差一倍，初步证明了α，α-二溴化(来源：ABf399C论文网www.abclunwen.com)苄引发苯乙烯ATRP反应时是双官能引发剂，并用~1H-NMR对聚合物结构进行分析，进一步证明了α，α-二溴化苄引发苯乙烯ATRP时是双端同时增长的。

No: trouble was turned into catastrophe by the Federal Reserve, which botched monetary policy, tightening when it should have loosened, thus depriving banks of liquidity when it should have been pumping money in.

都不是这些：而是因为联邦储备系统的修正的金融政策把经济搞砸了，例如，政策上需要银根放松，它却收紧，因而当市场需要货币供应时，银行却没有流动的资金。

Before and after exercises, the type of DDX-200 multifunction rehabilitation machine is used to test mentality and physiology ability which is produced by Beijing Boda electronic corporation examines some indicators of testers, such as the choice reaction time of vision, attention distribution of vision, arm stability and so on.

使用北京博达电子公司生产的DDX-200型电脑多功能心理生理能力测试康复仪，测试被测的视觉选择反应时，视觉注意分配和手臂稳定性等指标的数据并进行实验前后比较。

Five vanadium catalysts were made with γ-Al2O3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively.

结果表明，采用以V2O5为活性组分，介孔分子筛为载体，浸渍法制备的钒催化剂，反应时DPC收率及DPC选择性是最高的，催化反应的效果最好。

The properties of self-similarity and fractal basin boundaries of the basins of attraction were found in many other models except host-parasitoid interaction model with Allee effct for the host.

对宿主具有Allee效应的种群相互作用模型研究表明：存在Allee效应时，寄生物种群续存的参数范围有了明显的减少。

The attack causes the cleavage of P-S double bonds, then the decomposition products reacting with the surface of Fe metal lead to the formation of the anti-wear and anti-friction film largely composed of polyphosphates and sulphides.

计算表明二烷基二硫代磷酸锌的活性元素为6位和7位硫原子，其与铁发生摩擦化学反应时，最可能的断键位置是6位和7位硫原子的双键。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。