When I say a horizontal plane, it doesn't have to be the entire horizontal plane.
当我提及水平面时，并不是指整个平面。
That is, for example, what we do when we look at, say, a horizontal plane or a vertical plane or a sphere or a cylinder.
不妨想一想，考虑一个水平面，一个垂直面，或是一个球面时的做法。
Well, we've seen a formula, for example, for a horizontal plane, or for something that's parallel to the yz plane or the xz plane.
我们已经学过一个公式，它是关于水平面的，或者某些平行于yz平面或xz平面的平面。
But, when it comes to looking for the normal vector, be rest assured that the normal vector to a horizontal plane is just vertical.
但是在寻找法向量时，可以确定法向量与水平面垂直。
The plumbline is always perpendicular to the horizontal plane.
铅垂线总是垂直于水平面的。
J2 method - inlet of inclined plane and horizontal plane into 60 degree Angle.
J2 制法--进料口的斜面与水平面成60度角。
Cases with clockwise horizontal plane t loop may easily suffer from cardiac neurosis.
环顺转者易于发生心脏神经官能症。
In horizontal plane, the orientation of larger horizontal principal stress is about the NS.
水平面内最大主应力的方向基本为南北方向。
The stability of a tippe top rotating on a slightly rough horizontal plane is considered in this paper.
本文讨论微粗糙平面上翻身陀螺绕直立的极轴永久转动的稳定性。
Without the horizontal plane for placement, a smoker can very conveniently fix the hanging ashtray to a vertical plane.
在无水平面放置的情况下，吸烟者可以很方便地将其固定在某一立面上。
In profile, the forehead and muzzle touch on the same vertical plane of a right Angle whose horizontal plane is the top of the skull.
从侧面看，额头和口吻处于同一垂直平面上，与头顶的水平面正好成直角。
The base plate and the horizontal plane form a certain Angle, and the front end of the base plate is higher than the rear end thereof.
所述底板与水平面成一定的角度，且其前端高于其后端。
The vertical adjustment turns the palms from a horizontal plane to an inclined plane - closer to vertical, the natural 'repose' position.
垂直的调整把手掌从水平面转成斜面-接近垂直的、自然“休息”的位置。
As compared with the existing system, it has advantages as broader listening area and better reproduction effects in the horizontal plane.
与现有的系统相比较，该系统具有水平面上听音区域较广、重发效果较好等优点。
The mathematic model has four degrees of freedom (surge, sway. yaw and roll), taking the couple motion of roll on horizontal plane motion into account.
预报采用进退、横漂、首摇和横摇四个自由度的方程，考虑了横摇对水平面运动的耦合影响。
It is found that the Angle between tumble axis and horizontal plane increases with valve lift. The "tumble" is not a pure tumble, but is a inclined swirl.
用热线风速仪研究了缸内滚流的形成过程，发现滚流轴线与水平面的夹角随气门升程的增大而增大。
Using ellipse hypothesis, one can only compensate the deviation for UAV flying in horizontal plane by the data sampled while UAV flying in more than 5 directions.
采用椭圆假设算法，可利用飞机平飞时在多于5个不同方向的采样数据来自动补偿平飞时的罗差。
The glenoid fossa exhibits retroversion and a spiral twist in the horizontal plane, this anatomy property should be considered in the design of shoulder prosthesis.
肩胛盂窝在轴位（水平）平面呈后倾改变及螺旋性扭曲改变，在肩关节假体设计中应考虑此解剖特点。
The varied types of horizontal plane, vertical plane and branch member of the steel microwave tower are compared to find their influences on the standardized design and cost.
分析了钢结构微波塔平面、立面和腹杆选型对其标准化设计及经济性的影响。
A fault movement can be resolved into an axial component (parallel to the pipe axis), a lateral component (perpendicular to the pipe axis) in the horizontal plane and a vertical component.
断层运动可分解为轴向分量(与管轴平行)、水平面的侧向分量(与管轴垂直)和竖直分量。
Two kind of horizontal plane trajectories of the Acquisition Phase (AP), Tangential Trajectory and Arc Trajectory, are discussed and predictors of ground track range are given, respectively.
比较分析了两种捕获段水平面轨迹：切线轨迹和弧线轨迹。分别给出了两种轨迹的数学模型以及航程计算公式。
As for the characters of the Doppler Radar radial velocity data, the single variable background error covariance is used. And the anisotropic covariance function is adopted in the horizontal plane.
其根据多普勒雷达径向速度资料的特点，水平方向采用非各向同性的单变量背景场误差协方差函数。
Sensor in the horizontal adjustment process, it is best to use the level meter, making the installation of sensors in a unified horizontal plane, to ensure the consistency of the load they suffered.
传感器在水平调整过程中，最好使用水平仪，使得安装的传感器在统一水平面上，保证其所受负荷的一致性。
Obstacle-free sector is a sector formed by an arc originating at the reference point of the edge of a helideck and extending outward in the horizontal plane level with the elevation of the helideck.
无障碍区域是由一个起于直升机甲板边缘的基准点并在直升机甲板的水平面向外延伸的弧形所形成的区域。
A first oblique surface (9) and a second oblique surface (10) which form a certain Angle with the horizontal plane are arranged on the upper surface (5) and the lower surface (6) of the wall module.
该墙体模块的上、下安置面(5)和(6)上设置有与水平面成一定角度的第一斜面(9)和第二斜面(10)。
A first oblique surface (9) and a second oblique surface (10) which form a certain Angle with the horizontal plane are arranged on the upper surface (5) and the lower surface (6) of the wall module.
该墙体模块的上、下安置面(5)和(6)上设置有与水平面成一定角度的第一斜面(9)和第二斜面(10)。
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