phototachymeter
/ˌfəʊtəʊtəˈkɪmɪtə/Surveying
noun
An optical form of tachymeter.
Origin
1970s; earliest use found in Soviet Journal Optical Technology. From photo- + tachymeter, after Russian svetodal′nomer.
| 单词 | phototachymeter |
| 释义 | phototachymeter/ˌfəʊtəʊtəˈkɪmɪtə/Surveying noun An optical form of tachymeter. Origin |
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