无结构

The calculation result of molecular dynamics simulation was received using the minimization in molecular mechanics method, which indicates that the optimized configuration is one-to-one hydrogen bonds of the double chains of atactic PVA .

通过分子动态模拟，对所使用的两个具有无规结构的聚乙烯醇链进行能量优化，结果表明，当两个聚乙烯醇分子中的羟基形成了一对一的氢键时，能量最低，体系最稳定。

Polystyrene synthesized by Nd〓/MgBu〓·AlEt〓/HMPA is atactic, which is confirmed by its FT-IR and NMR spectra.

采用红外光谱和核磁共振谱表征了稀土催化合成的聚苯乙烯的立构规整性，表明为无规结构。

By using comparison principle, the sufficient conditions of this model with global attractivity of infection-free periodic solution and system permanence were obtained.

研究一类具有阶段结构和脉冲免疫的SIR模型，利用比较原理得到此模型无病周期解全局吸引和系统持久的充分条件，并利用数值模拟验证结论。

It is to say that after amplificated a few autogenetic cells in vitro,we can make cell-scaffold complex when mix these cells with scaffold which has cytocompatibility and biodegradability.

同时，这种细胞—支架复合物无免疫原性，且拥有和自体组织类似的结构和功能，因此被认为具有广泛的应用前景。

To test the antibacterial effect of MEBO against anaerobic spore-bearing bacillus, anaerobic non-spore-bearing bacillus (Bacteroides fragilis, propionibacterium acnes) and fungi, etc.

本实验观察了MEBO使厌氧芽胞杆菌——破伤风杆菌、厌氧无芽胞杆菌——脆弱类杆菌和痤疮丙酸杆菌、真菌——白色念珠菌等在形态结构、菌落特点和致病性等方面发生变异。

This article take the cast-in-place reinforced concrete spatial core beamless roof characteristic as a foundation, analyzes its basic mechanics performance, explores the reasonable computation pattern and the design method, to carries on the design, the safeguard structure safety handling correctly, further promotes its application, has the vital significance.

本文以现浇钢筋混凝土空心板无梁楼盖的特点为基础，分析它的基本力学性能，探索合理的计算模式和设计方法，对正确进行设计、保障结构的安全使用、进一步推广它的应用，有重要意义。

With the most advanced architectural techniques, as reinforced concerte structure and beamless roof, it became the largest modern butchery-Municipal Committee Butchery, in the Far East.

当时采用了先进的混凝土结构和用&伞形柱&撑起的&无梁楼盖&，以最先进的建筑技术手段建成，成为远东地区最大的现代化屠宰场——工部局宰牲场。

The Imperial Vault of Heaven is a beamless hall,to which the neighboring Triple-sound Stones and Echo Wall add an air of mystery.

皇穹宇为一组无梁结构建筑，宇前三音和围墙回音壁声传导建筑，更增添了当年天人感应的神秘气氛。

Its structure was characterized by FT-IR, 1H NMR and MS. Solubility data of betulin and 3, 28-di-O-glutaryl-betulin in acetone, ethanol, water and phosphate-buffered saline (PBS, pH value 7.4) were determined by equilibrium method.

采用FT-IR、1H NMR和MS对产物进行结构表征，并且选用平衡法测定了桦木醇和桦木醇戊二酸酯在丙酮、无水乙醇、水和磷酸盐缓冲溶液（PBS， pH值7.4，）等不同溶剂中的溶解度。

The acetate bicyclic guanidine has the above structure and is synthesized by a direct reaction of bicyclic guanidine and acetic acid in a catalyst-free aqueous solution.

所述的醋酸双环胍具有如上结构，是由双环胍与醋酸在无催化剂、水溶剂中直接反应合成。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。