plus-tree

基本解釋

Preliminary analysis on genetics of phenotype measuration of plus tree of Ulmus pumita Linn.
白榆優(yōu)樹表型測定的遺傳學(xué)初步分析。
Preliminary Selection of Superior Families and Plus Tree on Platanus occidentalis L.
一球懸鈴木優(yōu)良家系及優(yōu)良單株的選擇。
Title： Preliminary analysis on genetics of phenotype measuration of plus tree of Ulmus pumita Linn.
關(guān)鍵詞：白榆;優(yōu)樹;遺傳參數(shù);通徑分析;直接影響;間接影響
Then such plus tree" s cold tolerant abilities have been assessed using electricity-conductivity methold.
為合理開發(fā)利用、保存桉樹基因資源及遺傳改良提供科學(xué)依據(jù)。
By the experiment, we can draw a conclusion that the cadastral vector data transformation based on B plus tree index is an efficient method and has a bright future.
實驗表明，基于B+樹索引的數(shù)據(jù)轉(zhuǎn)換方法，可大幅度提高數(shù)據(jù)轉(zhuǎn)換的效率，是實現(xiàn)數(shù)據(jù)共享有效可行的、很有前景的一種方案。