铅垂线

铅垂线总是垂直于水平面的。

The plumb line is always perpendicular to the horizontal plane .

垂线间垂线间垂线间的用铅垂线调整使得垂直。

Between perpendiculars adjust with a plumb line so as to make vertical .

瓦工和木工经常使用铅垂线。

Bricklayers and carpenters often use plumb lines .

利用激光延展技术代替铅垂线，用激光束瞄准代替人眼瞄准。并在零位检查中利用CCD探测技术，使激光垂线和炮口十字线通过CCD摄像头形成的像在显示器上显示出来。

By using laser beam expanded technology and CCD detecting technology , laser vertical line is used to substitute common vertical lines and CCD detector is used to substitute eye aiming .

对于一个在铅垂线上的两个硬球及刚性地面组成的硬球碰撞体系，计算了它的Lyapunov指数。

For a hard sphere collision system in which two spheres in a vertical line above the rigid ground , numerical calculation shows that its Lyapunov exponent is positive .

铅垂线辅助城区航空影像的绝对定向

Absolute Orientation of Aerial Imagery over Urban Areas Combined with Vertical Lines

对角线垂直时间剖面一个与铅垂线绝对成直角的平面。

Vertical diagonal time section a flat surface at right angles to a plumb line .

最后，给出了装置复现的准铅垂线的准确度分析。

Finally , the accuracy analysis of the quasi-plumb line reproduced by the device is demonstrated .

斜井垂直地震剖面法几个世纪以来，它一直在倾斜，现在已偏离铅垂线许多度了。

Deviated-well VSP Over the centuries it has begun leaning , until it is now many degrees off the perpendicular .

垂规，铅垂线一种装置，如铅垂线，用于从给定点标记竖直方向垂直布线电缆分规范

A device , such as a plumb line , used in marking the vertical from a given point . Riser cables-Sectional specification

用铅垂线调整使得垂直。这样，在两根电线杆中间的电线就略为下垂一些。

Adjust with a plumb line so as to make vertical . Then the wire between two posts gets lower in the middle .

铅垂线总是垂直于水平面的。异型坯连铸双浸入式水口浇铸技术模拟研究及工业实践

The plumB line is always perpendicular to the horizontal plane . Simulation Study and Industrial Practice of Double SENs in Beam Blank Mold

将高科技的航空定向技术与同位素稀释测井技术相结合，研制出一种智能化的地下水动态参数测量仪。铅垂线辅助城区航空影像的绝对定向

A new intelligent meter by combining directional aviation techniques with isotope tracer dilution logging is manufactured . Absolute Orientation of Aerial Imagery over Urban Areas Combined with Vertical Lines

最后通过调节机器人在起跳阶段最初时刻“虚拟腿”和铅垂线的夹角控制机器人的跑步速度。

Finally , the running speed of the robot is controlled by adjusting the angle between the virtual leg'and the vertical line at the beginning of the stance phase .

光学天文时纬仪器具有长期稳定性好，可监测地方铅垂线变化与测定的绝对性等优点。

The optical astronomical instruments for time-latitude measurements have advantages of good long-term stability , being able to monitor changes of the local plumb line and to make absolute determinations .

在床面经过一段时间变形出现沙垄后，又量测了一个典型沙垄上不同位置沿铅垂线方向上各测点处的瞬时流速过程。

After a period of bed deforming , sand dunes emerged and we also measured the instantaneous velocity process of several points on the prearranged plumb lines of a representative sand dunes .

反倾结构面的倾角愈小、上下游水位差愈大，剪应力临界点的位置愈靠近坝踵铅垂线；

The smaller the angle of the weak plane , and the larger the water level are , the closer the location of the critical point is to the plumb line through the dam heel , and vice versa .

由于机械加工精度和常平架的调平精度有限，天顶摄影仪的视轴、垂直旋转轴与铅垂线总是存在不一致，导致测量精度与理论精度存在很大的偏差。

Due to machining accuracy and limited leveling precision of gimbals , there is always an inconsistency between the visual axis and the vertical rotational axis of the digital zenith camera and the plumb line , which leads to a big deviation between measurement precision and theoretical precision .