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torrent | 急流，洪流，山洪，倾注 | Rushing STREAM of water; great downpour of RAIN. | 水的急速流动；倾盆大雨。 |
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torrid zone | 热带 | That part of the EARTH between the TROPIC OF CANCER and the TROPIC OF CAPRICORN. Also called the tropics. | 地球上介于北回归线和南回归线之间的地区。亦称the tropics。 |
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torsion balance | 扭秤 | A device for measuring very small forces of attraction resulting from GRAVITATION, MAGNETISM, etc., and consisting of a bar suspended ho... more | 一种测量来自地心引力、磁力等极小吸引力的装置。它由一根靠一条弹性细丝水平悬挂的棒组成，该棒的... more |
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total eclipse | 全食 | See ECLIPSE. | 光源全部被遮蔽的一种食。 |
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total magnetic intensity | 地磁总强度 | The vector resultant of the intensity of the horizontal and vertical components of the EARTH's MAGNETIC FIELD at a specified point. | 在某一特定点上，地球磁场水平和垂直分量强度的合成矢量。 |
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towering | 高耸，伸长 | Apparent increase in the vertical dimension of an object near the HORIZON, due to large inequality of ATMOSPHERIC REFRACTION in the LINE OF ... more | 由于对某物体顶端和底部视线上的大气折射极不均匀，造成接近地平线的该物体在垂直高度上的视增加。 |
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tracer | 示踪物，示踪剂 | Foreign substance introduced into the water by natural or artificial means which enables determination of water movement through measureme... more | 以自然或人工的方式投入水中的外部物质，通过同时测量该物质的分布和位置，可测定水的运动。 |
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tracing cloth | 描图布，透写布 | A fine semitransparent linen or cotton cloth sized on one side and dull on the other. | 一种精制的半透明亚麻布或棉布，一面是经过精压加工处理的平面，另一面是毛面。 |
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tracing paper | 描图纸，透明纸 | A thin tough semitransparent paper suitable for making tracings of drawings, or for miscellaneous use in hydrographic work, where perma... more | 一种坚韧的，半透明的薄纸，用于透写描图，或在无需长期保存且铅笔作业较多的情况下，用于海道测量... more |
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track | 跟踪；导向 | The actual path or route of a craft over the GROUND or sea bottom, or its graphic representation. In AIR NAVIGATION also called track made g... more | 追踪移动的目标，如用雷达或光学系统。不考虑未来的位置，通过保持对过去位置的记录、制表或图示而... more |
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track | 跟踪；导向 | (v.t.). To follow the movements of an object as by RADAR or an optical system. To navigate by keeping a record, tabular or graphical of the ... more | 追踪移动的目标，如用雷达或光学系统。不考虑未来的位置，通过保持对过去位置的记录、制表或图示而... more |
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track: dead reckoning | NULL | A line representing successive DEAD RECKONING POSITIONS of a craft. | NULL |
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track: great-circle | 大圆航迹
| The TRACK of a craft following a GREAT CIRCLE, or a GREAT CIRCLE which a craft intends to follow approximately. | 某船舶沿大圆航行的航迹或者某船舶计划要沿其航行的大圆。 |
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track: intended | 计划航线，预定航线
| The anticipated path of a vessel relative to the EARTH. | 船舶在地球上航行的预期路线。 |
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track: radar guided | NULL | See RADAR. | NULL |
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track: recommended | 推荐航线 | A track, shown on a chart by either a dashed or a continuous line, recommended to all or only certain vessels. | 经过了特别检查以尽可能地确保没有危险、推荐船舶沿此航行的航线。 |
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track chart | 航线（路）图 | A chart showing recommended, required, or established tracks, and usually indicating turning points, courses, and distances. | 表示推荐、所需或规定航线的海图，通常标有转点、航线和距离。 |
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tracking | 跟踪 | The process of observing the sequential changes in the position of a target to establish its motion. | 观察目标对象位置的顺序变化过程，以建立它的运动轨迹。 |
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tracking camera | 弹道摄影机 | See CAMERA: BALLISTIC. | 一种精密的地面摄影机，一般使用玻璃底片，用于夜间以恒星为背景拍摄空间物体，如火箭或卫星等。如... more |
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track line of sounding | 巡航测深线，顺路测线 | A continuous record of SOUNDINGS obtained by a ship on an extended voyage en route between its home port and the working ground. Also call... more | 在船籍港与作业地点之间延伸的航行途中，某船获得的连续测深记录。亦称之为cruise line of sounding。 |