嘌呤：嘌呤是对由碳、氮原子组成的双环结构的杂环化合物的统称。
Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms.
分化较好的星形细胞瘤中可以见到内环是血管基膜、外环是胶质膜的双环结构。
In the well-differentiated astrocytoma showed structure of ring upon ring, the inner ring was the basement membrane of blood vessel, while the outer ring was the glial membrane.
通过分析比较，最终采用基于双环结构和场效应管相结合的模拟预失真模块方案。
Through the analysis and comparison, the FET-based analog predistorter with dual-loops is adopted for this design.
一种简单的含氮有机分子，具一个双环结构——六元嘧啶环融合成一个五元咪唑环。
Purine a simple nitrogenous organic molecule with a double-ring structure? A 6-membered pyrimidine ring fused to a 5-membered imidazole ring.
采用双环结构，用三个非线性PI环节实现了对整流器直流电压与功率因数的高性能控制。
The DC bus voltage and the power factor of the PWM rectifier are regulated by three nonlinear PI controllers with high performance.
利用带有不同拓扑荷数的两束涡旋光束进行共轴叠加，产生了一种新型光束双涡旋光束，其光强分布为双环结构。
A new type of the double-vortex beam is generated by the coaxial superposition of vortex beams with two different topological charges, whose intensity distribution is double-ring.
对于采用FC（光纤通道）网络的航空电子系统，从FC的基本模型出发，给出了三种具有容错能力的常用拓扑结构：双环结构、双交换机结构和交换机仲裁环组合结构。
To the avionics of fibre channel(FC) interconnection, based on the basic FC interconnection model, three fault tolerance topologies are given: loop-to-loop, switch-to-switch and switch-loop.
对方形机壳异步电动机的定子振动分析模型作了研究，给出了一种比双环模型更适用的多自由度模型，并对典型结构的方形异步电机进行了实际分析。
This paper studies the stator vibration of an induction motor with square frame, and presents a novel multi-degree vibrating model which is superior to the conventional double-ring one.
其次，电力网络的典型网络结构有环网、放射型、单端供电型、双端供电型等形式。
Secondly the power network's the typical feature are loop structure , radial type, supply fed at one end and supply fed at two ends.
对汽车锁环式双锥面同步器的结构、工作原理、常见故障类型进行分析研究，找出发生故障的原因，然后提出解决和控制的方法。
The purpose of this paper is to analyses the structure, working principle and common troubles of twin cone lock ring synchronizer and to study the control methods and trouble shooting ways.
双环网络是计算机互连网络或通讯系统的一类重要拓扑结构。
Double-loop network (DLN) is an important class of topological structure of the Internet or communication system.
该传感结构采用新型的双萨尼亚克环结构并用波分复用技术代替了传统的双光源结构，减小了系统损耗，实现了对多扰动的位置的测量。
The sensing structure has the novel double Sagnac loop and WDM technology instead of traditional double light source, reducing the system error and realizing the measurement of multi disturbance.
逆变器瞬时电压PID控制与电压电流双环控制相比，在电路结构、成本等方面更具优越性。
The instantaneous voltage PID control inverter has advantage on circuit and cost, compared with voltage current dual-loop control inverter.
通过对当前工业控制系统的研究，结合工业控制现场的实际情况，设计了具有双冗余环结构的现场以太网结构，能够在较短时间内完成故障探测和修复。
Through the study of current industrial control system and the actual status of industrial control field, design an Ethernet structure used in industrial field with double redundancy ring.
提出一种改进的双控制通路锁相环结构。
The authors propose an improved phased locked loop (PLL) architecture with dual control paths.
双环测力传感器弹性体是一种新结构。
Double ring type load cell's elastomer is a new type of structure.
考察了反应温度、催化剂用量、轴配体、苯乙烯浓度以及双核锰配合物的配体中桥链长度、刚柔性、氧杂原子及其构筑的冠环结构对环氧化反应的影响。
The influences of reaction temperature, catalyst amount, axial ligand, concentration of styrene as well as the length, rigidity and flexibility of the linkers were investigated.
在此基础上，对转速环电流环双环控制系统进行了控制器结构选择与参数设计。
Controller structure is chosen and parameters are designed for double-loop controlling system based on the model.
合成了一种新型星形聚醚环氧树脂，用以改善双酚a环氧体系的综合性能。用FTIR光谱和化学分析法，表征了其结构组成。
A new kind of starlike polyether epoxy resin was synthesized and its structure and composition were characterized by the FTIR spectrum and the chemical analysis.
采用了双环控制结构，先构造内环状态反馈以改善对象动态特性，然后按照内模控制原理设计外环的控制器。
First, the state feedback is used to improve the process static and dynamic performance. Then, the controller is designed based on the internal model control principle.
提出了一种神经网络电流内环控制加混合模糊pi电压外环控制的双环控制结构。
This paper presents a new dual-loop control structure, with a neural network current as the inner-loop and a hybrid fuzzy-PI voltage as the outer-loop.
软件实现了调速系统的双闭环调节，其中速度环采用滑模变结构控制，电流环则是经典的PI控制。试验结果说明该调整系统有较好的动态和静态性能。
The software comes true the double closed loop regulator, therein the velocity loop is the variable-structure control, and the current loop is the classical PI control.
作品利用梦幻、象征等创作手法以及作品的双环式的结构布局。
The works' creative method of illusion and symbolism; The works' double circular structure.
其位移效应规律对于双环氧四氢呋喃木脂素的结构确定，尤其糖的连接位置和羟化位置的指定，提供了一定的判断依据。
The rules of displacement provided suggestion for the confirmation of double-tetrahydrofuran lignans, especially the position of hydroxylation and glycosylation.
其位移效应规律对于双环氧四氢呋喃木脂素的结构确定，尤其糖的连接位置和羟化位置的指定，提供了一定的判断依据。
The rules of displacement provided suggestion for the confirmation of double-tetrahydrofuran lignans, especially the position of hydroxylation and glycosylation.
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