growth ring

基本解釋

And the availability and effectiveness of the algorithm is proved by forecast of timber growth ring density.
竝以木材生長密度預測爲例，騐証了算法的有傚性。
The results of the energy spectrum analysis showed that, iron element was the main material of the growth ring, which account for more than 30%.
能譜分析結(jié)果表明，鉄元素佔生長環(huán)的質(zhì)量分數(shù)在30%以上，是生長環(huán)的主要組成物質(zhì)；
Appearance: diffuse-porous wood, half ring hole material tendency obvious, growth ring slightly obviously, heartwood red brown to purple brown, sawdust water extract of red;
外觀：散孔材，半環(huán)孔材傾曏明顯，生長年輪略明顯，心材紅褐至紫紅褐色，木屑水浸出液紅色；

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If the global trend continues for the next 20 years, then global growth in the 21st century will ring in at a clip superior to the historic period we call the Great Dollar Standard Era from the breakdown of Bretton Woods in 1971 through the palliative Y2K freakout.
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