多分子的

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。

The wood structures of Lauraceae were characterized by most diffuse porous; most pores solitary, less multiple and cluster pores; simple and scalariform perforation with few bars; most solitary pore; alternate intervessel pitting; most of rays multiseriate, less uniseriate; all of rays heterogeneous, mostly heterogeneous Ⅲ and Ⅱ type rays; most of axial parenchyma paratracheal type, less banded or marginal type; oil cell and mucilage cell in axial parenchyma cell or ray cell; mostly fiber tracheid and libriform fiber, less septate fiber.

结果表明：除檫木外，其它木材的管孔分布均为散孔材，具较高的单孔率；导管分子穿孔板兼有单穿孔和梯状穿孔2种或者仅具有单穿孔；导管间纹孔式为互列；导管－射线间纹孔式类型丰富，主要为刻痕状和大圆状。木射线有单列和多列射线2种类型，单列射线稀少、短，多列射线数量多；射线组织主要为异形Ⅲ和异形Ⅱ；轴向薄壁组织以傍管状为主，少数有带状或轮界状。油细胞和粘液细胞普遍存在于射线薄壁细胞或轴向薄壁细胞中。木纤维由韧性纤维和纤维管胞组成，部分树种具分隔纤维。

There are few literatures reporting the photodissociation of these compounds at their A-band.

事实上，具有C_s对称的有C-C长链的溴代烷烃分子更接近一般的多原子分子，其光解研究有十分重要的理论和实际意义。

Ofeffective 1st branches, length of main inflorenscence, effective siliques of maininflorenscence, density of main inflorenscence, length of silique, seed per sillique,1000 seed weight, total effective siliques per plant had significant positive correlationwith yield per plant. Polymorphisms between zhongshuang No.4 and H228 was examined by SSR primers. 152 primers Showed polymorphisms, and a linkage map containing 123markers, including 18 linkage groups was constructed. The total genetic distance ofthe map was 3483.1cM, and the average distance of two adjacent markers was28.32cM.

选用SSR引物对中双4号和H228间进行多态性检测，有152对引物在双亲间表现多态性，用这些引物分别对142个株系进行检测，构建了含有123个SSR分子标记、18个连锁群的连锁遗传图，总图距为3483.1cM，标记间平均距离为28.32cM，各标记在18个连锁群上的分布很不均匀，其中，第1、12、13、17连锁群上分布标记较多，其它连锁群上分布标记较少。

Synthesis and liquid crystalline behavior of three recently reported mesogenic block-molecules, namely polyhydroxy 1-benzoylaminopropane-2,3-diols I、star-shaped pentaerythritol tetrabenzoates II and calamitic bolaamphiphiles with lateral chains III which are constituted of anisometric block, amphiphilic block and alkyl or perfluorinated chains with different topologies are reviewed in this article.

本文对近来报道的三类嵌段液晶分子：多羟基1－苯甲酰胺－2，3－丙二醇两亲性分子I，星状季戊四醇苯甲酸酯II及带侧链的波拉化合物III的合成及自组装行为作了综述。

Random amplified polymorphic DNA markers were used to measure genetic diversity and genetic structure of 150 individuals from 5 natural populations of Carya cathayensis. 252 loci were identified from 20 RAPD primers, out of which 168 loci were polymorphic and accounted for 66.7% of the total genetic diversity at species level.

利用随机扩增多态性DNA分子标记技术，分析了山核桃5个天然居群150个个体的遗传多样性和遗传结构，20条10bp的随机引物共扩增出252个位点，其中，多态性位点168个，多态位点百分率为66.7%。

Heterogeneous reactions convert the unactive molecules to theactive species HOCl and 〓.

多相反应使原本对光不敏感的分子变成光敏的〓，HOCl等分子。

Molecularly imprinted polymers are a new kind of macromolecular materials with molecular recognition capability. Because MIPs have the advantages of predetermination, specificity and practicability, they have been extensively used in chromatographic separation, antibody mimic, solid-phase extraction, biosensors, catalysing reaction and other relevant fields.

分子印迹聚合物是一种具有分子识别能力的新型高分子材料，由于它具有预定性、专一性和实用性等优点，因此在色谱分离、抗体摸拟、固相萃取、生物传感器及模拟酶催化等诸多领域都有广阔的应用前景。

Transfection particles for delivery of nucleic acid into higher eucaryotic cells in vitro and in vivo comprises one or more nucleic acid molecules condensed by organic cationic molecules.

用于在体内和体外传送核酸至高级真核生物细胞内的转染颗粒，包括一个或多个由有机阳离子分子凝聚的核酸分子。

This experiment utilizing cell biology together with molecular biology technique begins with the above-mentioned three researching heatpoints to research the effect that SLT interposes MCs biology action and to strive to clarify the part of cell molecular biology mechanism of SLT'therapeutic action.

本研究利用细胞生物学与分子生物学技术，从上述三个研究热点入手，多层面地研究SLT 干预MCs 生物学行为的效应，力图阐明SLT 治疗作用的部分细胞分子生物学机制。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。