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单词 surveying altimeter
释义 surveying altimeter
[sǝr`vā·iŋ al`tim·ǝd·ǝr]
ENGINEERING
A barometric-type instrument consisting of a pressure-sensitive element which contracts or expands in proportion to atmospheric pressure, connected through a linkage to a pointer; its dial is graduated in units of linear measurement (feet or meters) to indicate differences of elevation only.
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