| 单词 | planimeter |
| 释义 | planimeter noun[C] mathematicsspecializeduk/plænˈɪmɪtər/us/plænˈɪm.ə.t̬ɚ/apieceofequipmentformeasuringtheareaof aflatshapebymovingapointarounditsedge 测面器，求积计 Science & Society Picture Library/GettyImages Geometrical & mathematical instruments
Examplesofplanimeterplanimeter We begin with a brief description of theplanimeter. From theCambridge English Corpus Measurements were made with hand-held calipers andplanimeterfrom hard copy. From theCambridge English Corpus The area covered by the different habitats in the whole study area and in the three separate zones was estimated using aplanimeter. From theCambridge English Corpus This measurement has been conducted with aplanimeteror a computer-assisted technique using digitized copies of the mammogram. From theCambridge English Corpus Bay dimensions were extracted byplanimeterfrom topographic maps. From theCambridge English Corpus Theplanimeterwas a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.That means theplanimetermeasures the distance that its measuring wheel travels, projected perpendicularly to the measuring wheel's axis of rotation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Originally a radialplanimeterwas of academic interest only, but ten years later clock driven recording instruments started being used. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The other end of the linkage is fixed for a polarplanimeterand restricted to a line for a linearplanimeter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Developments of theplanimetercan establish the position of the first moment of area (center of mass), and even the second moment of area. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The pictures show a linear and a polarplanimeter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The area of the shape is proportional to the number of turns through which the measuring wheel rotates when theplanimeteris traced along the complete perimeter of the shape. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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