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With the geometry, theory of errors and optimization principle used and the related national standard referred, a novel 3DLSA for evaluating the spatial straightness errors was proposed, so as to evaluate the spatial straightness errors effectively and to gain the error values with higher accuracy. Then,a mathematical model of the 3DLSA was deduced, true three-dimensional fitting of the spatial line was theoretically carried out.

为了有效地评定空间直线度误差，并得出正确度较高的误差值，运用几何学、误差理论和最优化原理，参照相关国家标准，提出了评定空间直线度误差的三维最小二乘算法（3DLSA），推导了3DLSA算法的数学模型，实现了空间直线的三维拟合。

Supposing the hot end of a bare thermocouple is a global thermometer, the authors built a mathematical model for the heat-exchange-based air temperature measurement with the bare thermocouple, deduced the dynamic response time and the deviation estimate formulas in theory. The formulas can be satisfied under the conditions of global thermometers and contact-type temperature measurement.

文中假设裸露热电偶的热端为一球形温度计，建立裸露热电偶热传导测量空气温度的数学模型，从理论上给出其热传导测量空气温度的动态响应时间和最大温度误差估计式，从而可知只要球形温度计在接触式测量温度时得到其动态响应时间和最大温度误差即可满足所求公式。

The problem of using thermocouple is introduced, and different methods of building mathematical model of thermocouple characteristic are discussed.

简单介绍了当前热电偶应用存在的问题，分析了建立热电偶特性的数学模型的各种方法，并提出了应用前向多层神经网络建立热电偶特性数学模型的方法及其优势。

The mathematical model of thermoregulation in nude man was modified with Fpcl and Fcl so as to be applied to the man in cloth.

将修正后模型的预测结果与实验值进行了比较，结果表明本文所做的假设和推导是合理的。

In the process of developing the two-dimensional mathematical model of the human thermoregulation system, convection heat transfer between blood and tissue is studied, the methods for calculating blood convection heat transfer are developed.

在建立和发展二维人体热调节系统数学模型的过程中，本文对血液与人体组织间的对流换热进行了分类研究，发展了不同类型血液对流换热的计算方法。

A numerical method is used to obtain the solutions of the mathematical model of the human thermoregulation system,and human temperature distribution and dynamic change during simultaneous exposure to heat and vibration are calculated.

采用数值方法对人体热调节系统数学模型进行求解，计算了不同热和振动复合环境条件下人体温度分布及动态响应，计算结果与实验结果相符较好，相对误差小于5％。

The influences of additional pressure losses at the entrance and the wall-slip velocity caused by the viscoelasticity of rubber on the process of filling were studied on the basis of injection molding of plastics, and a mathematical model of filling flow in the thin rectangular for rubber was set up.

借鉴塑料熔融注射技术，研究了胶料粘弹性引起的入口附加压力降和固体壁面滑移速度对充模过程的影响，从而建立了橡胶在薄矩形模腔内充模流动的数学模型。

The mathematical model of weight gain per unit area during carburizing was deduced on basis of the third boundary condition of surface reaction for carburizing and RE-carburizing.

本文系统地研究了20、20CrMnTi和20Cr2Ni4A钢气体渗碳和稀土渗碳过程中的碳浓度分布、表面碳浓度增长动力学和渗层增厚动力学。

The mathematical model between thresher velocities and threshing broken rate was developed.

建立了圆形截面脱粒元件线速度和脱粒破碎率之间的数学模型。

The initial and boundary conditions and the mathematical model for water hammer of a throttle valve are deduced.

与水击理论相结合，推导了阻尼阀水击的初始和边界条件，创建了阻尼阀水击数学模型。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。