A rhombus has two lines of symmetry. In a rhombus, the lines of symmetry refer to the lines which divide a rhombus into two identical halves and each half is the mirror image of the other. Different objects have a different number ofsymmetrylines. Here, the rhombus lines of symmetry are ...
Section 3 synthesizes a class of planar 1R1T, 1R2T PMs with large rotational angles and two kinds of spatial PMs with high rotational ability and bifurcated motion by means of the Lie group theory. Using the proposed moving platform, Section 4 constructs a hybrid mechanism, of which mobility...
The 3D electro-mechanical mapping system NOGA XP (Biosense Webster, Inc., Irvine, CA, USA) allows simultaneous measurement of local electrical activity and mechanical motion of myocardial tissue. The data are generated by electro-magnetic tracking of a miniaturized sensor located at the tip of the...
As defects frequently govern the properties of crystalline solids, the precise microscopic knowledge of defect atomic structure is of fundamental importance. We report a new class of point defects in single-layer transition metal dichalcogenides that can
In a 5-axis machine tool, which includes rotational axes, the orientation of the tool changes in various directions during machining. A workpiece may be machined by the tool side rather than the tool end, so the relation between the machined surface and the motion of the tool cannot be suff...
It should be noted that different 2R1T PMs may have distinct motion characteristics. According to the virtual chain method [3], they can be classified into three categories: PU-equivalent PMs, RPR-equivalent PMs, and UP-equivalent PMs.
[Lecture Notes in Computer Science] Medical Image Computing and Computer-Assisted Intervention ? MICCAI 2017 Volume 10435 || Multi-level Multi-task Structu... M Descoteaux,L Maier-Hein,A Franz,... 被引量: 0发表: 2017年 [Lecture Notes in Computer Science] Medical Image Computing and Computer...
Versions Notes Abstract This article deals with the theoretical preconditions for creating a high-performance, universal earthmoving vehicle with continuous motion that can create long grooves of different depths and widths in the soil using a single actuator. For this purpose, a new symmetrical rotor...
Versions Notes Abstract The subway sliding plug door system is crucial for ensuring normal operation. Due to the differences in the structure and motor control procedures of different sliding plug door systems, the rotational speed monitoring data curves show great differences. It is a challenging pro...
Versions Notes Abstract We demonstrate the emergence of an effective “time” axis in the ground state of a gauged rotational symmetry theory in four-dimensional Euclidean space. In so doing, we remove the necessity of Wick rotation to Lorentz spacetime, an arbitrary and sometimes ill-defined proc...