In order to find the exact waterline, the false edges are removed by horizontal projection.
为了找到准确的吃水线边缘，利用水平投影和连通域的方法，去除了伪边缘。
Trend is the direction of the horizontal projection of a line, measured clockwise from north.
线倾向：它是直线水平投影的方向，自正北顺时针度量。
This paper provides a new construction method used when the horizontal projection of the plane Angle is equal to its space Angle.
本文提出平面角的水平投影与其空间角相等时新的作图方法。
On the horizontal projection plane, an included Angle is formed between the thrusting bars and the longitudinal center line of the axle.
在水平投影面上，推力杆与车架纵向中心线之间具有夹角。
The results show that it is inadvisable to select a large curvature of horizontal projection and a complicated space curve, while the use of single waved curve would be better.
计算表明，空间线型预应力筋水平投影的曲率不宜太大，线型不宜太复杂，应尽量选择单波形曲线。
Meanwhile, for a droplet falling freely under gravity with horizontal projection, the track model and the longest distance in both horizontal and vertical directions are obtained.
建立重力作用下作平抛运动液滴的轨道模型，得出了水平方向与竖直方向上的最大输运距离。
Meanwhile, for a droplet falling freely under gravity with horizontal projection, the track model and the longest distance in both horizontal and vertical directions are obtained.
建立重力作用下作平抛运动液滴的轨道模型，得出了水平方向与竖直方向上的最大输运距离。
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