中柱的

But in the process of ion exchange, xylose molecular is easily converted into arabinose because of catalytic isomerization, which results in the decrease of its purity and difficulty of crystal.

木糖是一种在化工、食品等领域有着广泛用途的五碳糖，工业生产是用稀强酸将玉米芯中含有的大量多缩戊糖分解为单个的木糖分子，然后通过离子交换除盐、脱色，精制提取，但在强碱离子交换柱中，木糖分子容易被部分催化异构转化为阿拉伯糖，使得木糖纯度下降，结晶困难。

Diastereomers of cinchonine and cinchonidine were separated in pressure-assisted capillary electrochromatography mode, and the resulted separation efficiency was much higher than that obtained in high performance liquid chromatography.

采用压力辅助电色谱模式拆分了非对映异构体辛可宁和辛可尼丁，其柱效远高于其在HPLC中拆分的结果。

Epidermis, cortex, endodermis, stale can be observed from the surface of a root to the center.

从根的横切面从外向根内观察，可分为表皮、皮层、内皮层和中柱这4个部分

The lowermost part of an entablature classical architecture that rests directly on top of a column .

楣，柱顶过梁古典建筑中横梁的最低部分，直接置于柱头

Lycopodium also have protosteles.

一些低等植物的茎也有原生中柱。

The arrangement of vascular tissue in the stem is very varied, giving a number of different types of STELE.

茎中维管组织的排列方式多种多样，由此产生多种类型的中柱。

In our studies,sludges composting was used as object, fluoranthene was on behalf of PAHs,and methods included dynamic sampling,room analysis,sludges' composting,leaching of soil column,and room culture were employed. The main contents include:the concentration and the distribution of PAHs in municipal sludges in Jiangsu Province,effects of composting on the concentration of PAHs in municipal sludges,the physicochemical properties of water dissolved organic matters in sludges before and after composting,effects of sludges composting and DOM on the desorption-leaching and eco-toxicity of FLT in polluted soil,and primary investigation of mechanism on same phenomena.

本论文以污泥堆肥为原料，以荧蒽(fluoranthene，FLT)为PAH的代表，采用动态取样、室内分析、污泥堆肥、土柱淋滤和室内培养等方法，系统研究了江苏城市污泥中PAHs的含量以及分布模式；堆肥对污泥中PAHs含量的影响；污泥堆肥前后水溶性有机物的理化性质特征变化；污泥堆肥对污染土壤中FLT解吸-淋滤、以及生态毒性的影响，并对有关现象进行了机理探讨。

In view of different volatile substance in beer, PEG column and FID （hydrogen flame ionization detector） were selected in the measurement. Besides, quantitation analysis of involatile compositions in beer could be done by internal standard method or by external standard method.

针对啤酒酒中不同的挥发性物质可选择PEG柱和氢火焰离子化检测器法进行检测；还可用内标法和外标法对啤酒中的不挥发组分进行定量检测分析。

The root system in the cortex of the host stem has a few branches and highly simplified stele of original triarch vascular bundles. The haustrium root system, which is from the root system in the cortex of a host stem enters the vascular tissues as finger-like body from the vascular rays and then to become hyphae-like body among the vascular cells.

皮层根有少数分枝，无次生结构，中柱结构高度简化，从胚根的结构可看出其初生木质部原先是三原型的；吸器根从皮层根上发生，进入寄主维管射线中，再进入维管组织内，并形成许多丝状体。

Macrophanerophytes such as pine and cedar are more and occupie greater percentage to from bottom to top, which are affected by clime and geography and human avtivity. Because people pay more attention to Macrophanerophytes and less to shrub and herbge plants, ecology of the forest is unbalance and benefit is low.

在整个沉积物柱的孢粉组合中，松、杉等大型乔木始终占有很高的比例，而且越到上部比例越大，这除了受滇中地区气候地理因素的影响外，可能还有人为的原因，人们在保护森林资源和植树造林过程中往往只是注重了大型的乔木而忽视了灌木和草本植物，从而使森林生态失衡，生态效益低下。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。