| 释义 |
dendrograph|ˈdɛndrəgrɑːf, -æ-|
[cf. dendrography.]
An instrument used to measure the periodical variations in the size of tree trunks. Hence ˌdendroˈgraphic a.
1924D. T. MacDougal (title) Growth in trees..dendrographic measurements. Ibid. 37 Standardization of the dendrograph for measurement of daily equalizing variations... The essential feature of the instrument is a rigid metal frame surrounding the trunk with one fixed contact-point, and the second consisting of the short bearing-arm of a lever, the long arm of which carries a pen which traces the record. |