spruce (Picea)是什么意思

用法例句

The Observation Report Looking for the Vessel in the Pinus and Picea;

在松属、云杉(属)内寻找导管的观察报告

The meiotic behavior of three species of the genus Picea was investigated using pollen mother cells(PMCs).

3种云杉的PMCs中环状二价体的频率和配对指数较高,异常分裂现象的频率较低,表明云杉(属)植物的同源染色体间分化程度少,染色体组在减数分裂过程中表现出高度的保守性,与其高度保守的有丝分裂核型较一致。

The species in genus Picea are tall arbores with good ecological adaptability and economic values.

云杉(属) (Picea)树种是高大乔木 ,生态适应性强 ,利用价值高 ,近 2 0 0年来欧、亚、美作了大量的引种栽培工作。

Variance coefficient of latewood percentage to sound vibration parameters of Picea genera wood;

云杉(属)木材晚材率变异系数与声振动特性参数

Relationship between Picea genera Wood Density and Sound Characteristic Parameters;

云杉(属)木材密度与声学特性参数之间关系的研究

Study on the Degradation of 9 Species of Edible Fungi to Spruce Lignin and Cellulose;

9种食用菌对云杉木质素及纤维素降解的研究

Approach on Eliminate Spruce Woods of Diseases and Pests in Maixiu Forest Zone Huangnan;

浅谈黄南州麦秀林区云杉病虫害木清理

Gene Differentiation in Natural Population of Picea asperata and Sampling Strategies for Ex situ Germplasm Resource Conservation;

云杉天然群体基因分化与种质资源异地保存抽样策略

Growth Trait Variation of Picea asperata at Seedling Stage and Provenance Selection;

云杉种源苗期性状变异及种源选择初步研究

Genetic differentiation and Provenance Division of Natural Population in Picea asperata;

云杉现有天然林的遗传分化和种源区划分

Comparative Study on Picea and Abies in Hengduan Mountainous Areas;

横断山区云杉林与冷杉林的对比研究

Progress in Genetic Diversity of Picea at Phenotype and Allozyme Level;

云杉表型与同工酶遗传多样性研究进展

Scanning electron microscopic observation of the needles in picea were des-cribed,the results showed that,the cuticular layer of surface needles was equal thick ei-ther on upside or on reverside epidermis.

对针叶树云杉的针叶进行了表面结构的观察。

Zucc and Picea Asperata Mast.

文中利用人工气候室试验研究了高CO2 浓度和土壤水分胁迫对红松和云杉的影响 ,结果表明 :CO2 浓度升高使红松和云杉生长量的增长率提高 ,土壤水分胁迫使树木生长量的增长率下降 ,且CO2 浓度升高的正效应要小于土壤水分胁迫的负效应。