To extend relation between the tangent line and asymptotic line of plane curve, which had been described in literature[1].
我们对文献 [1 ]中的平面曲线的切线与渐近线之间的关系予以推广 ,得到密切多项式与渐近多项式之间的类似关系 。
Performance Evaluation of Technological Innovation based on Osculating value method in Textile Corporation;
基于密切值法的纺织企业技术创新绩效评估
Application of modified osculating value method in evaluation of water environmental quality;
改进密切值法在水环境质量评价中的应用
Application of osculating value method for optimal selection of mining methods in preliminary design;
运用密切值法对初步设计中的采矿方法进行优选
Comprehensive assessment of the water quality of the South Feihe River using the modified intimate data method;
南淝河水环境质量的改进密切值法综合评价
Application of intimate data method in synthetical evaluation about power quality;
密切值法在电能质量综合评价中的应用
Using the PSR model, this article has build the evaluation index of the ecological security system, applied the entropy method to define the weight of each assessment index, and applied the intimate data method for evaluating ecological security of Fuzhou Shanzi Reservoir.
通过PSR模型建立福建山仔水库生态安全评价的指标体系,应用熵权法确定各指标权重,引入密切值法对水库的生态安全进行评价。
A three-dimensional finite element model for precision cutting 3J33 maraging steel using the commercial software Marc is presented to study the effect of tool nose radius on chip formation, the principal cutting forces and the temperature fields.
在商业化软件Marc的基础上建立了圆弧刃精密切削三维有限元模型,研究不同半径的圆弧刃精密切削条件下主切削力、切屑形状和切削温度场分布。
A high speed and high precision cutting test to turn the strong aluminum alloy LY12 with PCD and SPD cutters is carried out, and the influences of cutting conditions and cutting quantities on the roughness of machined surface are investigated systematically.
采用聚晶金刚石刀具和天然金刚石刀具对LY12高强度铝合金进行了高速精密切削试验 ,系统研究了切削条件、切削用量对加工表面粗糙度的影响规律。
The results of precision cutting of the squeeze casting SiCw/Al compo- ite show that the cutting tools are seriously wore out,and the quality of the cutting surface is mainly depended on the feed.
对挤压铸造法制造的碳化硅晶须增强铝复合材料(SiCw/Al)进行的精密切削研究结果发现;一方面这种复合材料对刀具磨损较为严重;另一方面复合材料切削表面质量主要取决于进给速度,随进给速度提高,复合材料表面质量下降。
Application of osculating method for the prior order and risk classification for the marine organic pollutants;
用密切值法进行海域有机污染物优先排序和风险分类研究
Comprehensive assessment of agricultural economic projects using osculating method;
用改进的密切值法综合评价农业技术经济方案
Osculating method was used to analyze the air quality data during ten years from1991 to 2000,some results were got.
大气环境质量综合评价是一个城市环境质量考核的重要指标,改进的密切值法是其中一种切实可行的评价方法。
The surface finish of precision grade is reached with polycrystalloid diamond PCD when precision machining SiCw /Al composites, and it still is lower degree than that of aluminum matrix.
文中通过采用PCD刀具进行SiCw增强铝基复合材料的精密切削试验,用原子力显微镜AFM对加工表面的微观形貌进行检测分析,表明SiCw/Al复合材料的加工表面粗糙度值可以达到精密级,但比切削铝基体材料获得的表面粗糙度值更大,且粗糙度值随着切削速度的增加、进给量的减小而减小,而与背吃刀量的关系不大。
The main research contents and key techniques of some kinds of advanced cutting technologies, including high speed machining, dry machining, hard cutting, precision machining and virtual machining, are summarized in some aspects such as machine tools, cutting tools and appropriate process parameters.
从机床、刀具、工艺参数等方面综合介绍了几种先进切削加工技术 (包括高速切削、干切削、硬切削、精密切削和虚拟切削 )的主要研究内容及关键技