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tach stave (levelling staff) | 准距标尺；水准尺 | A staff with a length of about 2m with subdivisions. It is used in combination with a levelling instrument or theodolite. | 长两米左右具有刻度的标尺。与水准仪或经纬仪一起使用。 |
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taffrail | 艉栏杆 | The after rail at the stern of a vessel. | 位于船尾的栏杆。 |
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taffrail log | 拖曳式计程仪 | See LOG. | 这种计程仪主要由一旋转体构成，由编织成的测速绳拖在水中，其上与距离记录设备相连，通常是牢固地... more |
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tagline | 牵（拉）线 | A line, either marked at equal intervals or run over a registered sheave, used in LARGE-SCALE SURVEYS to take equally spaced SOUNDINGS at pr... more | 刻度均匀的线或绕于标有刻度的滑轮上的线。用于大比例尺测量以获取控制点一定距离处的等间隔水深。 |
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tagline survey | 牵线测量 | See SURVEY. | 使用牵线法实施的大比例尺测量。在江河或港湾工程中有时采用的一种精确手段。 |
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tail wind | 顺风 | WIND which blows in the same direction as that in which an object is moving, with respect to the EARTH's surface. | 相对于地球表面而言，风向与运动物体运动方向相同的风。 |
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talus | 岩堆；斜面 | A SLOPE. A sloping mass of DETRITUS lying at the base of a CLIFF or the like, and consisting of material which has fallen from its face; a... more | 位于悬崖等基底上的岩屑堆，由从岩石上掉下来的物质组成；亦指这堆物质表面的坡度或倾斜。 |
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talweg (or thalweg) | 海（河）谷底线 | The line joining the lowest points of a VALLEY throughout its length. Sometimes called valley line. | 沿着河谷纵向方向连接其最低点的线。有时亦称valley line。 |
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tandem control | 多船台测深，串联控制系统 | In HYDROGRAPHIC SURVEY, a system of obtaining two or more adjacent SOUNDING LINES run simultaneously and controlled by one ship, the other... more | 在海道测量中，指由一条船和其他船或系在上面的汽艇控制的同时获得两条或多条相邻测深线的系统。 |
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tank | 箱，槽，柜 | A fixed structure for storing liquids. | 存放液体的一种坚固容器。 |
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tangent screw | 微动（微调）螺旋 | A slow motion screw of a surveying instrument or SEXTANT. | 测量仪器或六分仪上的微动螺旋。 |
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tape | 卷尺，带尺；用卷尺测量 | In SURVEYING, a ribbon of steel, INVAR, or other suitable material on which GRADUATIONS are placed for the measurement of lengths or distanc... more | 测量用的钢卷尺、铟钢尺或其它材料的卷尺，为了测量长度或距离，尺上标有刻度。 |
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tape: alignment correction | 卷尺定线改正
| A CORRECTION applied to the measured length of a line to allow for the TAPE not being held exactly in a vertical plane containing the line. | 因卷尺与所测线段不在同一铅垂面内而对其测量长度施加的改正。 |
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tape: base | NULL | See BASE TAPE (or WIRE). | NULL |
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tape: catenary correction | NULL | See TAPE: SAG CORRECTION. | NULL |
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tape: grade correction | 卷尺倾斜改正
| A CORRECTION applied to a distance measured on a SLOPE to reduce it to a horizontal distance between the vertical lines through its end ... more | 应用于在斜坡上所测距离的改正值，斜坡距离减去它得到过斜坡两个端点的垂直线间的水平距离。也称为sl... more |
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tape: invar | 殷钢圈尺
| Any survey TAPE made of INVAR. | 由殷钢制作的测量尺。 |
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tape: length correction | 卷尺长度改正
| The difference between the nominal length of a TAPE and its effective length under conditions of STANDARDIZATION. | 卷尺的标称长度和在标准情况下的有效长度之间的差值。 |
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tape: reference | 基准基线尺
| See REFERENCE TAPE. | 一种专门作为比较标准的基线尺，亦称standard tape（标准基线尺）。 |
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tape: sag correction | 卷尺垂曲改正 | The difference between the effective length of a TAPE (or part of a TAPE) when supported continuously throughout its length and when sup... more | 卷尺（或某一部分）在全部长度上都有连续支撑时的有效长度与仅个别点上有支撑时的有效长度之间的差... more |