Chinese English

The quantity applied to the nominal length of a TAPE to allow for a change in its effective length because of its being used at a tempera­ture other than that for which its standard length is given.

The CORRECTION applied to the nominal length of a TAPE to allow for a change in effective length because of its being used at a tensi­on other than that for which its standard length is known.

CORREC­TIONS applied to a distance measured with a TAPE to eliminate ERRORS caused by the physical condition of the TAPE, and to the manner in which it is used.

一种装在特制盒内的精密温度计，可夹在或贴在金属的带尺上，用来进行基线或导线带尺测量的温度改正。

Any object, point, etc., toward which some­thing is directed. An object which reflects a sufficient amount of a radiated SIGNAL to produce an echo signal on detection equipment. See RADAR TARGET, SONAR TARGET. The distinctive marking or instrumentation of a ground point to aid in its iden­tification on a PHOTOGRAPH. In PHOTOGRAMMETRY, target designates a material marking so arranged and placed on the GROUND as to form a distinc­tive pattern over a geodetic or other control point marker, on a property corner or line, or at the positi­on of an identifying point above an underground facili­ty or feature. A target is also the image pat­tern on AERIAL PHOTOGRAPHS of the actual MARK placed on the GROUND prior to PHOTOGRAPHY.

用于瞄准的物体或点等。能反射足量辐射信号以在监视器上产生回波信号的物体。为了便于像片辨认而设立的地面点标志或设施。在摄影测量中，目标是地面上的一些实物标志，这些标志设置在拐角或特征线上或在地下设施上方的特征点上，以使得在像片上形成大地点或其它控制点标志的清晰图像。目标也是摄影前地面上设置的实物标志在航摄像片上的影像图形。

LATTICES resulting from the enlarge­ment of small parts of Two Range and hyperbolic LAT­TICES, used for work which has to be carried out on a SCALE larger than that being used for the main SURVEY.

An apparatus designed for measuring horizontal distan­ces at sea. It is con­struc­ted so that a wire of small diameter, one end of which is anchored on the BOTTOM, passes around a calibrated sheave as the ship steams along the route to be measu­red.

用于海上测量水平距离的一种设备。把一条直径很小绳的一端抛锚于海底，当船沿着要测量的航线航行时，绳索绕过标有刻度的滑轮而得出测量数据。

A mooring arrangement in which a submerged FLOAT provides the upward force necessary to maintain the system in a fixed position with reference to the sea bottom.

Any transmission, emission, or reception of signs, SIGNALS, writing, IMAGES and SOUNDS or intelligence of any nature by wire, RADIO, visual or other electromagnetic systems.

An instrument for determining the distance from one point to another. Some such instruments employ a TELESCOPE and measure the angle subtended by a short base of known length. The complete equipment for measuring any quantity, transmitting the results electrically to a distance point, and there recording the values measured.

确定两点之间距离的仪器。有些仪器利用望远镜可测量一小段已知长度所对的角度大小。整套仪器可把测量参数电传到远方，并在那里记录其观测结果。

An electronic device that measu­res the phase difference or transit time between a transmitted electromagnetic IMPULSE of known FREQUENCY and SPEED and its return.

一种用来测量发射的电磁脉冲和返回的电子脉冲（已知频率和速度）之间的相位差或者传播时间电子设备。

The study and technique involved in measu­ring a quantity or quantities in place, trans­mitting this value to a station, and there interpret­ing, indi­cating, or recording the quantities; and transmitting commands from the station to control the measurement device.

一种学科和技术，用于测量位置的一个或多个参数，并把这些值传输到工作站，并在那里进行译码、显示或记录。