Chinese English

An instrument for the measurement of either SPEED alone or of both direction and SPEED of a CURRENT. See CURRENT POLE, EKMAN CURRENT METER, PRICE-GURLEY CURRENT METER, ROBERTS RADIO CURRENT METER, SWALLOW FLOAT, SAVONIUS ROTOR CURRENT METER, WOLLASTON CURRENT METER.

测量海流速度或者海流速度与方向的仪器。参见current pole（测流杆）、ekman current meter（艾克曼海流计）、PRICE-GURLEY CURRENT METER（普赖斯-格力流速计）、roberts radio current meter（罗伯茨电子海流计）、swallow float（斯瓦罗浮筒）、savonius rotor current meter（萨沃纽斯转子电流表）、wollaston current meter（沃拉斯顿验流计）。

A pole used to determine the direction and SPEED of a SURFACE CURRENT. The direction is determined by the direction of motion of the pole, and the SPEED by the amount of an attached graduated line (called current line or log line) paid out in a specified TIME.

用于测量表面流方向和速度的杆。海流方向通过杆的运动方向确定，速度通过在规定时间内放出系在杆上有刻度标记的测流绳的长度来确定。

The geographic location at which current observations are conducted. Also, the facilities used to make current observations. These may include a buoy, ground tackle, current meters, recording mechanism, and radio transmitter. See CONTROL current STATION and SUBORDINATE current STATION.

实施海流观测的站点，包括用于海流观测的设备。观测设备包括：浮标、锚泊装置、海流计、记录系统及无线电播发系统。参见subordinate station（附属验潮站）。

TABLES listing predictions of the TIMES and SPEEDS of TIDAL CURRENTS at various places, and other pertinent information. Also called tidal current tables.

A device used with an instrument, to provide a movable reference, as the runner of a SLIDE RULE, or the rotatable bearing indicator on a radar scope. In computer systems, a highlighted point on the DISPLAY which indicates the actual working position. For graphical editing special cursors (e.g. crosses, cross-hairs) can be selected. On output the cursor is moved automatically by the computer; on input it is under user control by means of a manual controlling device. A cursor may also be a manually positionable device, sometimes magnifying lens and a reticula to be used in connection with a DIGITIZER.

1.仪器中提供移动参考标志的设备，如滑尺的转轮或雷达显示屏的旋转方位指示线。 2.在计算机中，屏幕上一个指示实际工作位置的高亮点。对于图形编辑来说，可选择特殊的光标（如十字标、十字丝）。输出时，光标由计算机自动移动；输入时该光标由用户通过控制设备手工操作。 3.也可以是一个手动定位装置，有时附带放大镜和网状结构，并连接到一个数字化仪上。

In ASTRONOMY, a CORRECTION applied to the mean of a series of OBSERVATIONS on a STAR or PLANET to take account of the divergence of the apparent PATH of the STAR or PLANET from a straight line. In GEODESY, the CORRECTION applied in some geodetic work to take account of the divergence of the surface of the EARTH (SPHEROID) from a plane.

1.在天文学中，指在恒星或行星一系列观测中，对其观测值的平均值所施加的改正，以考虑恒星或行星视路径偏离某一直线的情况。 2.在大地测量学中，对于一些大地测量工作考虑到地球曲面偏离某一平面的情况所实施的改正。

联接水深相同点的线。由于制图综合的运用，等深线有时候会移位到水深点、符号或其它图上细节要素的外部。相对于原始测量划定的线，等深线通常表示水深相同点的连线的概略位置。

事件或现象按相同次序有规律地重复出现的完整系列。亦可参见frequency（频率）、hertz（赫兹）、period（周期）。