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- The alignment of the polar axis and the monitoring of the guiding process require absolute accuracy. 极轴的摆放及追踪过程必须十分准确。
- Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane. 由于地球是扁球体，绕极轴惯量矩最大，而绕在赤道面内的轴的惯量矩最
- A system of coordinates in which a point is located by its distance and direction (angle) from a fixed point on a reference line (called the polar axis). 一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。
- Based on the characteristic of ESG polar axis stabilizing in inertial space, the principle of ESG strapdown system attitude initial alignment using astronavigation algorithm is discussed in this paper. 由于极轴在惯性空间稳定的特点使静电陀螺捷联系统在姿态初始对准时可应用天文导航原理。
- These material periodicity regular movements and so on convection as well as Earth polar axis rotation are possibly the basic source powers which the terrestrial magnetic field produces. 这些对流以及地球极轴自转等物质周期性规律性运动可能是地球磁场产生的根本源动力。
- The variations of the ratio between stomatal polar axis and outer stomatal ledge aperture, as well as leaf indumentum of Lasianthus species are well correspondent to their habitats. 粗叶木属植物叶气孔长轴径／径轴变化幅度比较大以及叶表皮上的毛被多样化均能反映其对生态环境的适应变化。
- Sidereal Polar Axis Celestial Equipment 恒星极线轴太空设备
- In the applications of polarization maintaining fiber (PMF), the precision alignmet of the polarization axis of PMF is one of the key technologies. 在制作保偏光纤器件时，一项关键的技术就是要能精确地确定保偏光纤的偏振轴。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- The heavy ax was awkward to use. 这把重斧头不好用。
- A Method of Precisely Adjusting the Polar Axis of an Equatorial Radio Telescope 一种赤道式射电望远镜极轴的精密校准方法
- The axis of a circle is its diameter. 圆的轴线是其直径。
- The firemen splintered the door with an ax. 消防队员们用斧头将门砸开。
- Does the earth rotate on an axis? 地球是绕轴旋转的吗？
- A wheel revolves round/on its axis. 轮子是绕轴旋转的。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- The man cleft a block of wood in two with an ax. 那人用斧头把一块木头劈成两半。
- John got the ax from Mary-they won't see each other again. 约翰被玛丽拒绝了－他们从此不再来往。
- Having or mounted on a common axis. 同轴的有或装上共同轴的
