查询词典 double-entry system

Results showed that the hybrid monomer could photopolymerize effectively and both free radical and cationic polymerization processes were improved. When 2-Hydroxy-2-methyl-1-phenyl-1-propanone (1173) was introduced into hybrid system containing UVI-6976, the final conversion of propenyl ether double bond and polymerization rate increased obviously. The comparison of photopolymerization kinetics between hybrid and blend system was investigated as well.

结果表明，以硫鎓盐为光引发剂时，这三种杂化单体均可以有效进行杂化光聚合反应，丙烯基醚和丙烯酸酯双键都显示出较快的反应速度和较高的最终转化率，同时在简单结构的硫鎓盐（UVI-6976）引发体系中加入自由基引发剂2-羟基-2-甲基-1-苯基-1-丙酮（1173）后，丙烯基醚双键的阳离子聚合速率和最终转化率都有了很大提高。

The comparision with the continuous wave method and double-antenna method shows that the reflectometer essentially is equivalent to a integration of single-station method testing system module.The measurement system which can use single station can be used for reflectance measurement.

与连续波法、双天线法比较，得知反射计本质上相当于单站法测试系统中部分模块的集成，能采用单站法的测量系统就可用反射计测量。

In the power supply lines in intercourse of 50HZ, 3300V, start or end, the main motor ofcomprehensive explorer, scrap -block transporter, reship, crusher on the floor, motor of oil pump, cool the motor of Fan, start, end, double exchange and control the tape adhesive spread and tighten motor, it can also protect the electromotor and power supply lines. System integration of DPS system of

在交流50HZ，电压3300V的供电线路中，对综采工作面采煤机、刮板运输机、转载机、破碎机起动、停止及双速切换、主、从顺序进行控制，并能对电动机及供电线路进行保护。

TF-l350 type sugar segregator timing system adopt double loop direct current timing system and PID adjustor which the whole s\stem is made up of simulation component.

TF-1350型糖分离机调速系统采用双闭环直流调速，整个系统由模拟分离元件组成，采用PID调节器。

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

论文的主要工作如下： 1研究了飞机装配型架骨架设计重用技术，在总结归纳骨架线框结构类型的基础上，应用模板驱动的方法建立了骨架线框库，通过骨架线框零件的实例化和离线编辑实现骨架线框的重用，有效利用设计资源，减少重复劳动； 2提出穷举几何对象的装配特征直接获取方法，遍历零件模型的几何对象，从中捕捉所需装配特征，该方法简捷、高效；提出向装配面投影的装配特征间接获取方法，该方法在现有特征基础上生成装配特征，解决了部分装配特征难以直接获取的问题； 3研究了基于装配特征的飞机装配型架骨架自动装配技术，采用一种二叉树装配模型表达骨架的装配关系，并通过装配特征的分配、获取和赋值三个步骤，实现了骨架分别与飞机产品和可调支承的自动装配，避免了繁琐的人工交互操作，提高了骨架设计的效率和规范化程度； 4研究了飞机装配型架骨架零件间建模技术，在总结归纳骨架元件相贯处理方式的基础上，提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法，简化了骨架相贯处理的过程； 5基于以上研究，在CATIA平台上开发了飞机装配型架骨架快速设计子系统，并应用于某大型航空企业的装配型架设计，提高了设计效率和设计质量。

In order to satisfy the requirements of space position for the Magnetic Stereotaxis System, an on-line measuring system of double matrix CCD in VC++6.0 was developed.

对于空间定位而言，立体视觉检测主要包括：摄像机标定；图像的预处理及特征提取；特征匹配；三维尺寸计算与空间重建。

Automatic gauge control system in double-stand reversing cold mill is introduced. This system is consists of regulating device, thickness gauge and tachometer.

介绍了双机架可逆式冷轧机组厚度自动控制系统，该系统由调节装置、测厚仪和测速仪组成。

Besides, the transitiveness system arrangement and complicated social economic background, which emerged in the period of double-shunt, have made the urban planning system some disconformities.

城市规划制度的建立和发展受到社会经济制度和文化传统的影响和制约，双重转型时期"双轨制"的过渡性制度安排和复杂的社会经济背景使城市规划制度在改革过程中也出现了一些不协调。

This paper introduces the operation principle of laser velometer,expounds the control method in AGC system of double stand reversing cold rolling mill,analyzes each control algorithm of AGC system,and describs the composition and characteristics of each control section.

介绍了激光测速仪的工作原理，对双机架可逆冷连轧机系统控制策略进行分析，并研究了该厚度控制系统中的各种控制算法、各AGC控制环节的组成及特点。

The purpose of this dissertation is to build the oriented mechanism knowledge system for double wishbone suspension expert system and use the knowledge to build ex.

本文的目的是建立双横臂悬架专家系统导向机构的知识体系，以便进一步建立双横臂悬架专家系统知识库。

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。