1) theory of spirality
螺旋形理论
1.
According to the second perspective,the article probes into the theory of spirality,which is based on the spirality rising state of education level,and makes the commentary from the three aspects as f.
本文关注的是在第二种审视中针对教育程度呈现螺旋形上升态势所提出的“螺旋形理论”,并从三个方面,亦即“螺旋形理论”的涵义、推进和贡献加以评析。
2) Screw theory
螺旋理论
1.
Analysis of 2-DOF Parallel Mechanisms Based on Screw Theory;
基于螺旋理论的2自由度并联机构分析
2.
Application of screw theory to Stewart structure static calculation;
应用螺旋理论进行Stewart平台机构的静力学计算
3.
Based on screw theory and set theory,the mathematical description of idle degree of freedom was presented.
为了改善机构的受力性能,提高机构中关键部件的使用寿命,在机构中引入消极自由度,提出了消极自由度明确的几何定义,采用螺旋理论和集合论的方法,给出了消极自由度的数学描述和引入消极自由度的方法。
3) helix theory
螺旋理论
1.
According to the helix theory, in almost all structures of organic compounds exist helices.
螺旋理论认为,几乎所有的有机化合物结构中都存在螺旋,螺旋结构是导致旋光性的根本原因。
2.
On the basis of the helix theory proposed by the authors,the relationship between stereostructure and rotatory direction is analyzed for the fused polycyclic compounds.
通过笔者提出的螺旋理论,分析了多环稠合化合物的立体结构和旋光方向间的关系。
3.
According to the helix theory, the algebraic sum value of all rotations of dihedral angle helix is equal to zero in the structure of 1,3-disubstituted cyclohexane derivatives.
按照螺旋理论,1,3-二取代环已烷衍生物的结构中存在的二面角螺旋旋光度代数和为零,不应具有旋光性,但是它们却是光学活性的。
4) theory of screw
螺旋理论
1.
This paper studied the uncertainty configurations of the 3-RRRT parallel manipulator through a novel methodology based on the theory of screw.
对3_RRRT并联机器人的位置反解进行分析,根据螺旋理论对其进行瞬时运动分析,建立速度正反解方程,在此基础上获得了在奇异位形时的条件方程,并进行了数值仿真,为进一步的研究提供了理论基础。
2.
Based on theory of screw, a geometric decomposition of structural stiffness is proposed.
采用螺旋理论，从三个正交的外载螺旋柔顺轴和三个正交的变形螺旋柔顺轴推导得一个相似变换，对角元素是线性及旋转柔顺和刚度的静态值。
5) theory of reciprocal screw
反螺旋理论
1.
Base on a structural synthesis method of the theory of reciprocal screw, the design method of parallel manipulator of 3 rotational DOFs for pose adjusting of radar and other equipment was proposed.
提出一种基于反螺旋理论的设计,给出了用于调节姿态的具有3个转动自由度的并联机器人的设计方法。
2.
This paper presented a systematic structural synthesis methodology based on the theory of reciprocal screws,which was under given the design requirements for parallel manipulator with 3 rotational DOFs.
设计一种基于反螺旋理论的系统方法,给出了具有三个转动自由度的并联机器人的设计要求。
6) propeller theory
螺旋桨理论
补充资料：恶性螺旋形通货膨胀
恶性螺旋形通货膨胀
【恶性螺旋形通货膨胀】在恶性通货膨胀条件下，物价飞涨迫使工人要求提高工资，而厂商则借口工资提高后会增加成本，于是进一步抬高物价，以便获取更多利润，如此循环往复，使通货膨胀极端严重化。恶性螺旋形通货膨胀对经济有很强的破坏性，如果放任物价与工资这种螺旋形增长，将会达到无法抑制，最终走向经济崩溃的地步。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条