annual ring

n.

年轮；

annual ring:
Annual Ring
Annual Ring
An Annual Ring Antenna for UWB Communications
Climate and annual ring growth of black spruce in some Alberta peatlan...
Longitudinal variation in the thickness of the annual ring
Cellular phenology of annual ring formation of Abies balsamea in the Quebec boreal forest (Canada)
Evaluation of annual ring width and ring density development following fertilisation and thinning of Scots pine
Growth and annual ring structure of Larix sibirica grown at different carbon dioxide concentrations and nutrient supply rates.
Effects of elevated CO2 concentration on growth, annual ring structure and photosynthesis in Larix kaempferi seedlings
Ageing of Adult Snapper (Pagrus auratus) from Otolith annual ring counts: Validation by tagging and Oxytetracycline Injection
Influence of thinning and tree diameter class on the development of basic density and annual ring width in Picea abies.
Distribution of Guaiacyl and Syringyl Lignins in Japanese Beech (Fagus Crenata): Variation Within an Annual Ring