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Loxodrome normal circular-arc spiral bevel gear transmission is a typical engineering application based on the principle of Betrand conjugate surface. It is likely to be the hi-tech prototype for the middle or large spiral bevel gear.

斜航式法向圆弧螺旋锥齿轮传动是贝特朗曲面原理指导下的一类典型工程实现，可望为中大型锥齿轮传动提供一种新技术原型。

The knowledge data base management system based on the principle of expert system is used to store the designer and matcher's experience, and a heuristic rule-based system is used to perform the similar produce designing and matching assistant.

利用专家系统的知识构造法建立了基於设计人员和配试人员经验的知识库，用一定的推理规则进行相似产品的设计和辅助配试，使设计周期大大缩短，配试成功率得以提高。

An extremely high temperature of anode humidification is also unreasonable; as a result, when the current density is high, the liquid water should be injected directly into anode gas channel to guarantee both high inlet H〓 concentration and well-humidified membrane. 4. The utilization of Pt in the cathode catalyst layer will decrease with the increasing current density; as a result, based on the principle of maximal Pt utilization, the catalyst layer can be designed much thinner or not uniformly in the catalyst distribution.

而在此截面上，交指型流场燃料电池阳极侧的液态水饱和度的极值位置并不确定；在电池阴极处，液态水饱和度的极值总是出现在z=0.002m处的气体扩散层和膜的界面上，并且该处的液态水饱和度沿x方向存在一个最大值，与此相应的氧气的质量浓度分数在该处达到极小值，因此极限电流密度将首相出现该处，但总体来说液态水饱和度沿x方向的分布较为均匀。4。

On the principle of the deformation work this paper words out a very simple method for approximate calculation of the extrusion force in the metalic plastic extrusion processes.

运用变形功原理，推导出求金属塑性挤压过程中挤压力的一种极其简捷的近似计算式。

Based on the principle of "Life first and Health Essential" the Company developed Naturally-Walk Microcrystal Ecological Floorboards, which saves your time and energy in making choice between beauty and usefulness and cleaning.

建祥人本着"生命至上、健康为本"的理念，开发出了"自然行"微晶生态地板，让你无须在美观和实用之间做出选择，更不需花大量的时间为地板保洁。

In this work,based on the principle of microdoppler,the mathematical model between missile and decoy is constructed,and characteristics in microdoppler are analyzed through simulation,thus distinguishing the target from heavy decoys and the missile.It offers a new reassuring way to the discrimination of the real or false targets.Keywords : target recognition;warhead;decoy;microdoppler;micromotion

文中在对微动目标微多普勒分析的基础上，建立了导弹与诱饵的数学模型，采用短时傅里叶变换的方法对回波信号进行微多普勒特征提取，仿真分析了导弹与诱饵的微多普勒特征，通过研究其时频分布特点的差异成功的识别出了真假目标，从而为弹道导弹与重诱饵的识别提供了一个新的有效方法。

The paper presents the formulation of the inverse kinematics of the 3-RSS/RU parallel mechanism and analyzes the direct solution. It deduces velocity Jacobian matrix. The moment transfer Jacobian matrix is obtained base on the principle of virtual work and simulated the input and output.

本论文首先推导了3-RSS/RU并联机器人的运动学反解方程，并对位置正解进行了分析，推导了速度雅可比矩阵，在此矩阵的基础上，利用虚功原理得到了力矩传递雅可比矩阵，对力矩的输入输出做出了仿真。

The paper concerns in the results of analysis for nuclear power plant operator job and analysis for human errors related NPP accidents.Based on the principle of ergonomics a full psychological selection system of the professional adaptability of NPP operators including cognitive ability,personality and psychological health was established.

随着人机工程学的应用，核电厂主控制室设计者在充分考虑电站功能的同时，更注重为操纵员创造一个适宜的工作环境，使之符合操纵员的生理和心理特征，让操纵员能够在安全、高效、健康的环境中工作，从而使机对人有最大的适合度。

Based on the principle of the movement of the sun,a new method of sun-tracking is presented in this paper.

在分析太阳运行规律的基础上，提出一种太阳跟踪的新方案。

The personal learning environment, however, is not based on the principle of access to resources.

然而，个人学习环境，并不是基于这种获取资源的原则。

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。