The ice crystals must be oriented horizontally and the observer's line of sight must be close to horizontal to see the sundogs.
冰晶必须面向水平，而观察者的视线也必须接近水平来观察幻日。
Indeed, horizontal lines are similar to the familiar sight of a horizon line in the distance allowing them to convey a sense of wide-open space.
事实上，横线与熟悉的景物——远方的地平线相似，由此，它们适于传递一种辽阔空旷之感。
The reasons of five error sources including vertical axis, horizontal axis, sight line coder, TV undershooting value which can result in TV tracking system errors are analyzed.
分析了电视跟踪系统的垂直轴、水平轴、视轴、编码器、电视脱靶量五个误差源产生误差的原因，探讨了误差的取舍方法及相应的计算公式。
It consists of a base (the alidade) on which a sight is mounted. When this is horizontal, its axis is parallel to the base.
在(照准仪)基座上水平且与台基座平行地装有一镜。
Sight distance concerns along horizontal curve sections of highways and at locations where a barrier terminates near a highway's or ramp's intersection with another roadway.
沿公路平曲线路段的视距关注和地点附近的一个障碍终止公路的或坡道的交集与另一巷道。
The three vertical axis run into horizontal axises, inking vertical side and getting sight line through to make it possible for the visitors to appreciate landscape from all the directions.
三条纵轴贯穿于横轴之间，连接竖向，打通视线，使游人能够欣赏到各方向的远近景观。
A horizontal track system is inlaid into the work surface of the desk, improving the operator's line of sight to monitor walls and giving the console a cleaner appearance.
横向跟踪系统嵌入在桌子的加工面上，这样提高了操作者监控墙壁的视线，还使该控制台显而易见。
By adjusting the Angle between the active surface which is away from the body and the horizontal surface according to the needs, the function of prevent short sight and humpback can be achieved.
根据需要调整远身活动面与水平面的角度，这样就能达到防近视驼背的功能。
By adjusting the Angle between the active surface which is away from the body and the horizontal surface according to the needs, the function of prevent short sight and humpback can be achieved.
根据需要调整远身活动面与水平面的角度，这样就能达到防近视驼背的功能。
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