正的

Perhaps you have a burning question for a paleontologist.

也许你正有一个十分想知道的问题要询问古生物学家，也许你正考虑换个工作、想直接跟某位摄影师或景观设计师谈谈。

Taking the contents of Paeoniflorin, Flavonoids of Glycyrrhiza, n-butanol extraction and amount of dry extract cream as the evaluation indexes, the procedure of extraction, purification, concentration and dryness of Paeony, Glycyrrhiza and pawpaw was studied with orthogonal test and mono-factorial test.

分别以芍药苷含量、甘草总黄酮含量、正丁醇浸出物含量和固形物收率为评价指标，通过单因素试验和正交试验，筛选出白芍、甘草和木瓜的提取、纯化、浓缩和干燥工艺。

Synthesis of methyl pentyl carbonate by transesterification of dimethyl carbonate and pentanol

首次用磷酸铝分子筛催化戊酸与正戊醇的酯化反应合成了戊酸正戊酯。

Taking Na_2SnO_3·3H_2O as raw material, organic reagent (pentyl alcohol, butyl alcohol, cyclohexane) as dispersant, and adding anion surfactant (sodium dodecyl alkylbenzen sulfonate, ABS), uniform ultrafine SnO_2 powder is prepared by hydrothermal method using Sn_4 deposition as precursor.

以Na2SnO3·3H2O为原料，有机试剂(正戊醇、正丁醇、环己烷)为分散剂，同时加入阴离子表面活性剂(十二烷基苯磺酸钠，ABS)，以氢氧化锡沉淀为前驱体，用水热法制备了粒度均匀的SnO2超细粉体。

The effects of solvents and salts on the formation of a third liquid phase, distribution of catalyst, reaction mechanism and reaction rate in the reaction between n-butyl bromide and sodium phenolate with tetrabutylammonium bromide as a phase transfer catalyst were investigated.

中文摘要本文系针对以溴化四丁基铵为相间转移触媒催化正溴丁烷与酚化钠之反应，研究溶剂种类及盐类与碱类之添加量对形成第三液相、触媒分布、反应机构及反应速率之影响，被测试之溶剂包括氯苯、甲苯与正己烷，而在盐类与碱类效应的研究中，则测试溴化钠与氢氧化钠。

The TLC of them were concordance.They presented the same color fluorescence in the corresponding position at the ultraviolet light(365nm). After the vanillic aldehyde sulphuric acid ethanol solution developed, violet color spots presented at the same place. Reference substance of Polysaccharide presented violet color ,but in the corresponding position the crude and the prepared didn't show the spots . It proves that the chemical constituents of Polygala Root may not have changed after stir-baked with honey.

生远志正丁醇部位色谱和蜜远志正丁醇部位色谱基本一致：紫外灯（365 nm）下二者在相应位置呈相同颜色荧光，香草醛硫酸乙醇溶液显色后二者在相应位置的几个斑点均呈紫罗兰色，且远志皂苷元对照品斑点呈紫罗兰色，而在与其相应位置生远志供试品和蜜远志供试品均未检视到相应斑点。

In arithmetic the positive integer and the positive fraction were sufficient for all requirements.

在算数中，曾经正整数和正分数能够满足所有的需求。

If the true ("1") level is the most positiv e voltage, this logic is referred to as positive true or positive logic.

如果真("1")电平是高的正电压，则此逻辑称为正逻辑。

Terminal A is positive with respect to B for 0＞ωt＞π, and B is positive with respect to A for π＞ωt＞2π for the first cycle of the sine function.

拟译：在正弦函数的第一个周期，当0＞ωt＞π时，端点A相对B为正，而当π＞ωt＞2π时，端点B相对A为正。

It is engulfing North America market, american traditional media is tracing its preexistence this life lengthy and tediously.

它正席卷北美市场，美国传统媒体正连篇累牍地追踪它的前世今生。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！