查询词典 focal axis

The variation tendency of pulse pressure waveform along acoustic axis and in the focal plane has been numerically studied also.

同时还数值研究了脉冲压力波沿声轴和焦平面上的变化趋势，在幅度下降-6 dB的焦斑内没有观察到波形的明显变化。

The mirror of an astronomical telescope forms at its focal point an image of a star on the axis of the mirror.

天文望远镜把在镜轴上的星体成象在焦点上。

As to the remaining parameters, two methods are developed: first, accepting that the projection function complies with a circular function within at least a part of a given field of view, constrained by the obtained object-to-image radial mapping and a constant focal length, the best-fitting point of the optical origin is tested along the optical axis; secondly, referring to the postulation of the exclusively bilateral mapping between an imaged point and its scenic sight ray, a measuring technique is developed to survey the world coordinates which will fabricate a projecting path to the imaged points located on the imageable region of the image plane in order to directly model the projection geometries involved.

而针对其余参数本文提出两种解题方法：其一是根据『在「部分视野角范围」内，鱼眼相机的投射模型符合一典型的「圆形函数」』以标靶实体与其影像尺寸为限制条件，测试光学轴上的最佳视觉参考点、鉴定最适当的投射模型、焦距、及有效的视野角度范围。其二是根据『一视野线排他性地与对应「呈影点」一一映射』参考一呈影点来搜寻空间中对应视野线的绝对座标后，据以演绎相机内部影像形成的模型。

We calculate the angles between the P axis and the T axis of two focal mechanism solutions in 3 dimensions, and take the sum of two angles as the distance. By using the system cluster method, the classification of focal mechanism solutions has been carried out.

计算2个震源机制的2个 P 轴在三维空间中的夹角和2个 T 轴之间的夹角，再以2个夹角之和作为距离，采用系统聚类的方法对大量地震震源机制解进行分类。

An unsteady,one-dimensional heat transfer model of PTC is presented in this article.The distribution of the concentrated solar radiation along focal axis has been calculated.

与太阳能单效溴化锂吸收式制冷系统相比，双效系统对热源的要求较高(120-160℃)，但对太阳能的利用效率更高(COP 1.2-1.5)，具有更好的节能效果。

5Calibration of the laser optical axis of the basic principles and methods isdiscussed, laser target designator axis calibration device is designed, the key technologythat a large caliber, long focal distance from the axis parabolic reflector design is solved,and the cross target line which can be used for a wide variety of observation devices isdesigned, the final calibration accuracy is 0.05mrad.

5论述了激光光轴校正的基本原理和方法，设计了激光目标指示器光轴校正装置，解决了其中的关键技术：大口径、长焦距离轴抛物面反射镜的设计问题，并设计了可用于多种观瞄装置的十字靶标，最终的校正精度达0.05mrad。

This invention relates to a slider (11) for an optical data writing/reading apparatus (1), the slider carrying an optical lens (40) defining a focal point (42), the slider having a configuration such that, upon variation of the disk speed such as, for example, caused by a slider movement from an inner diameter to an outer diameter, the pitch angle varies owing to a pivot movement about a pivot axis which lies in a vertical plane through the focal point, the pivot axis preferably coinciding with the focal point.

本发明涉及用于光学数据写/读装置(1)的滑动器(11)，在该滑动器(11)上装有确定焦点(42)的光学透镜(40)，该滑动器具有这样一种结构，以便于在诸如滑动器从内径到外径运动造成盘速变化时，由于围绕位于经过焦点的垂直平面内的旋转轴的枢轴运动而改变倾斜角。

Analysis of the strain field discovers that the principal compressive and the principal tensile strain rates in the epicenter area are -30.840×10-9/a and 13.956×10-9/a respectively before earthquake, and the principal compressive strain axis is in a direction of N105.4°E which is consistent with the average direction at N107.5°E of the principal compressive stress axis from focal mechanism result.

应变场分析发现，震前震中区的主压与主张应变率分别为-30.840×10-9/a与13.956×10-9/a，主压应变轴N105.4°E与震源机制解得到的主压应力轴的方向N103°E一致。

The fault-plan solutions for the two events of the injection-induced microearthquakes were determined by using the first-motion′s direction of P waves from records of the KTB surface stations the focal mechanism at 5.1 km: the nodal planes Ⅰ, strike 30°, dip 46°, slip 10°; the nodal planes Ⅱ: strike 293°, dip 83°, slip 136°; T-axis: azimuth 241°, plunge 35°; P-axis: azimuth 349°,plunge 24°.

用KTB地面台网记录的资料和P波初动方向得到了这次注水诱发地震中两个大地震的震源机制解。其中震源深度为5.1km的地震，其节面Ⅰ参数为：走向30°，倾角46°，滑动角10°；其节面Ⅱ参数为：走向293°，倾角83°，滑动角136°；T轴方位角：241°，倾角：35°；P轴方位角：349°，倾角：24°。

The focal mechanism at 8.9 km: the nodal planes Ⅰ, the nodal planes Ⅰ: strike 213°, dip 76°, slip -21°; the nodal planes Ⅱ: strike 308°, dip 70°, slip -165°; T-axis: azimuth 261°, plunge 4°; P-axis: azimuth 169°, plunge 24°.

震源深度为8.9km的地震，其节面Ⅰ参数为：走向213°，倾角76°，滑动角-21°；其节面Ⅱ参数为：走向308°，倾角70°，滑动角-165°T轴方位角：261°，倾角：4°；P轴方位角：169°，倾角：24°。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。