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- non developable ruled surface 非可展直纹曲面
- Two new methods are presented for machining ruled surfaces.By means of adjusting the changing rate of straight generatrix, the first method can reform a general ruled surface into a developable one. 提出了2种加工直纹面的新方法.其中第1种方法通过调整直纹面上母线方向的变化规律,使之成为可展面,以便在加工中获得无脊棱的光滑曲面;
- A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies. 摘要在基本几何体的范畴内,提出一种以棱圆为导元素的直纹曲面。
- This article not only discusses the ruled surface features of uniparted hyperboloid and its application in archtecture engineering but also discusses the teaching of the ruled surface. 本文主要讨论了单叶双曲面的直纹性,指出它在建筑工程中的应用,并对直纹面的教学作了探讨。
- Now is to want only advantageous have competition, this is development rule. 现在是只要有利就有竞争,这是发展规律。
- The ruled surfaces were used to approximate the freeform surface of blade,attention was focused on the 5-axis plunge milling of blisk's tunnel. 针对整体叶盘等复杂结构件,从锻造毛坯到最终零件加工成形,需要切除大量的多余材料的问题,提出了一种开式整体叶盘通道的五坐标插铣粗加工方法。
- According to the thickness of the blade, variable distance offset curves of the shroud camber line and hub camber line were acquired, then the blade surface can be expressed by ruled surface. 按照叶片的厚度做盖盘曲线和轴盘曲线的变距偏置曲线,得到叶片曲面的直纹化表达式;
- The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces. 作者证实:单叶双曲面和双曲抛物面是直线曲面。
- Although using the CT pit percolation, we need analyze and ascertain the exception effluent reasons joining mine cranny develop rules. 我们利用CT坑透,结合矿井裂隙发育规律,分析判明了异常出水的原因。
- Unearthing the theory foundation will bring benefit to our judicial practice of developing rule of law in society. 试图从司法实际中去发现它们的理论真相,从而有益于我国建设法治社会的立法实践。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- director cone of a ruled surface 直纹面的准锥面
- Based on the development rule of transverse strain of external steel tube, the hooping effect of steel tube on core concrete was discussed. 基于外侧方钢管的横向变形的发展规律,探讨外围钢管对核心混凝土的套箍作用。
- double generator of a ruled surface 直纹面的二重母线
- The system theory has provided the theoretical foundation to investigate the development rule of the regional e-conomy scientifically. 系统论为更科学地考察区域经济发展规律提供了理论基础。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The developmental rule of human history makes clear, the development of productivity is the final decision force that the society progresses. 人类历史的进化规律表明,生产力的发展是社会进步的最终决定力量。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- singular generator of a ruled surface 直纹面的奇异母线
- To do the measure abscission layer grouting in site, the first step is to make clear the developmental rule of abscission layer. 要进行采场覆岩离层注浆等技术措施,首先必须弄清离层的发展规律。