| 单词 | thread-indicator |
| 释义 | > as lemmasthread-indicator thread-indicator n. a device for the accurate measurement of plant-growth, in which a thread attached to the plant passes over a pulley and actuates a registering apparatus. ΘΚΠ the world > plants > botany > [noun] > botanical instruments > for measuring growth thread-indicator1875 auxanometer1878 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 747 The Thread-indicator..in which..a horizontal needle..moves freely over a graduated scale as the end of the thread which is fixed to the plant rises with its growth. < as lemmas |
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