Alternative fuel vehicles

Analyzed the the existing problems of replacement material in the manufacture of pressure vessels,and relative suggestions were presented.

就压力容器制造过程中常常遇到的材料代用问题进行综合分析,并阐述了相应观点。

Substitution and Ellipsis——A Study on the Method of Syntactic Reduction;

代用与省略——论历史句法中的缩约方式

Four substitution ways while the base of the all plastics pulg in sheet fuse is out of shape are emphasized.

系统地阐述了汽车熔断器的种类、故障原因及排除方法 ,并着重介绍了全塑料型插片状熔断器底座变形时的 4种代用方法。

It is shows in this paper that the functions of selction and substitution in the database of lubricating grease are very special and necessary.

选用和代用功能是润滑脂数据库不可缺少的二个独特功能。

An improved algorithm based on the equal arc length method is presented to solve substitutive arc parameters of spline hob curve section.

提出一种基于等弧长法的改进算法,用于求解花键滚刀理论齿形的代用圆弧参数。

This paper presents a new method——using mean radius of curvature to find the substitutive arc of Archimedes spiral,with which better precision can be obtained and the calculating formulas are very simple.

提出了一种用平均曲率半径法求阿基米德螺旋线的代用圆弧的新方法,其计算公式简单,并可得到较高的精度。

Preparation and application of substitution alkali TS to dyeing;

新型染色代用碱TS的制备及应用

Development of substitutes for lead pigment;

含铅颜料代用品的开发进展

Objective To study the effects of Placenta Hominis and its substitutes on learning and memory ability in mice.

目的探讨紫河车及其代用品改善学习记忆的药理作用。