As the earth spins on its rotation axis, it wobbles like a top, slowly swinging the Northern Hemisphere closer to and then farther from the sun. 当地球自转时,自转轴会像陀螺一样「动」因此北半球与太阳的距离会逐渐接近,继而远离。
Arctic Circumpolar Boundary Current ( ACBC) is a newly revealed ocean phenomenon, which explains the flow route of Atlantic water in the Arctic Ocean and is a circulation around earth rotation axis. 北极环极边界流是新近揭示的重要海洋现象,是对北冰洋海洋环流长期研究结果综合得到的概念。
Moreover, it was shown that root architecture and soil type can significantly modify the hinge of root plate rotation axis. 根、土复合体在整个破坏过程中形成一个旋转轴,此轴的位置随根系形态、土壤类型的不同而变化。
In the perpendicular direction to the rotation axis of the petal, the repeat position error is most sensitive to the position error of the locking force. 在对接面内与旁瓣转轴方向相垂直的方向上,重复定位误差对锁紧力位置误差最为敏感。
Material along the rotation axis falls vertically toward the equatorial plane much faster. 沿著转轴两侧分布的物质则快速笔直地落入赤道面。
The bottom of the small sprocket ③ rotation axis, until the chain sprocket bite was. ③转动下端链轮小轴,直到链条被链轮咬合。
Individual Object Centers-each selected object receives its own rotation axis, all mutually parallel and passing through the center point of each object, respectively. 每一个选中物体都有各自的旋转中心,所有变换操作都是独立相互平行地传递到每一个物体的中心。
Our leading products are: IVAK brand rotation axis with seal, O-ring, supporting the production of automobile and motorcycle shock absorber rubber parts. 本厂主导产品为:IVAK品牌旋转轴用骨架油封、O型圈,配套生产汽车、摩托车减震器用橡胶件。
Using magnetic fluid dynamics and thermodynamics theory, a study on the results of axial bearing pressure ability of rotation axis magnetic fluid static seals was introduced. 介绍了利用磁流体动力学、热力学理论,研究旋转轴磁流体静密封轴向承压能力的结果。
Error Test and Compensation of the Rotation Axis of Five-axis Head 五轴头回转中心的几何误差检测与补偿
On the spectrum of linearized operator of rotating B é nard problem when the rotation axis and gravity act in different directions 旋转的Bénard问题中旋转轴偏离重力方向的线性算子谱研究
Least square identification method of the misalignment angle of gyro case rotation axis 壳体翻滚失准角模型最小二乘辨识方法
Hydraulic center-shaft winder When swinging transmission machine operation, the force constant rotation axis to make efforts before and axial rotation move backward. 当摇摆传动机械运行时,等速旋转入力轴使出力轴向前和向后旋动。
The dipole part of the field is usually aligned fairly closely with the Earth's rotation axis; 磁场偶极部分通常相当紧密地与地球自转轴排列在一起;
Mechanics Model of Rotation Axis in Directive Rotary Steerable Drilling System 指向式旋转导向钻井系统旋转轴力学模型自导向的重锤式蓄能器
A non-contact photoelectricity rotation axis measurement system based on PSD and laser triangulation was developed. 研制了一种基于PSD的激光三角法非接触式光电转轴测量系统。
The established conditions of moment of momentum theorem to instantaneous rotation axis when rigid body doing paralleled planar moves 刚体做平面平行运动时动量矩定理对瞬时轴成立的条件
The key point for re-constructing rotation surface is setting up rotation axis and generatrix. 旋转面重建的关键是确定旋转轴和母线。
A high-resolution reflective intensity modulated ( RIM) fiber optic sensor was presented for the rotation axis measurement. 研制了一种用于旋转轴线位置测量的高分辨率反射型强度调制(RIM)光纤传感器。
Introduced a design method of multiple field of view attachment with compact configuration, it is based on cube shaped frame. By defining different rotation axis and mounting different lenses in cube's surfaces respectively, kinds of Infrared optical system with changeable field of view are achieved. 介绍了一种结构紧凑的多视场转换器的设计方法,它以立方体为基础,通过定义不同的旋转轴,在立方体各面上安装不同的透镜,实现多种间断变化视场的红外光学系统。
Some seal structures which use in rotation axis leak-free seal point were introduced, compared input with output structure from design angle, and explained the possibility to research and develop. 介绍了用于旋转轴无动泄漏点的几种密封结构;从机械设计角度比较了输入输出部件结构的合理性,说明了研究开发的可能性;
The relationship between the deviation of rotation axis and the reflective optical intensity modulation was presented, and a high performance experimental system was also established for the experimental validation. 给出了旋转轴线位置偏移与反射光强度调制的关系表达式,并利用所建立了实验系统对该传感器的性能进行了分析。
A vehicle attitude control system forming the error signal by way of the optimal rotation axis 用最佳旋转轴方法形成误差信号的飞行器姿态控制系统
Rotation Axis and Angle in the Mechanism of Removal Transformation 移动变换机构中的旋转轴和旋转角度
A mobile-axis and the rotation axis are driven by the stepper motor, Another moving axis driven by a hydraulic cylinder does linear reciprocating motion. 其中一移动轴和转动轴由步进电机驱动,另一移动轴由液压油缸驱动做直线往复运动。
Radar antenna axis belongs to large rotation axis, whose perpendicularity is difficult to measure. 雷达天线转轴属于大型回转轴,对其垂直度的测量目前没有十分有效的方法。
Based on multi-body system kinematics theory, the universal topological structure model of workpiece to tool for multi-axis CNC machine tools is established, and the geometric error measurement and identification methods of translation axis and rotation axis are researched systematically. 本文基于多体系统运动学理论,建立了从工件到刀具的多轴数控机床通用拓扑结构模型,完成了机床几何误差的通用建模,对平动轴和回转轴的几何误差测量辨识方法进行了系统研究。
In real life, central principal axis of inertia of the rotor will be more or less deviated from its rotation axis, so that when the rotor rotates, it will create an unbalanced centrifugal force, we call it rotor imbalance. 在现实生活中,转子的中心惯性主轴会或多或少地偏离其旋转轴线,这样当转子旋转时,就会产生不平衡离心力,我们称之为转子不平衡。
The angle between the rotation axis and magnetic axis is defined as inclination angle α. 它的自转轴与磁轴之间的夹角称为磁倾角α。