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- Genetic variations of growth traits, wood basic density and tracheid length of Chinese fir clones were investigated in this paper. 摘要对杉木无性系生长性状、木材基本密度和管胞长度的遗传变异进行了研究。
- In this paper, 12 years old Chinese Fir clones were studied on the genetic variation of growth properties, basic density and tracheid morphological characteristics. 本文综合研究了12年生杉木无性系试验林的生长性状、基本密度和管胞形态的遗传变异规律。
- The results showed that stem volume (V) and wood basic density (BD) were the most important traits in selection breeding for pulpwood of masson pine and, stand and individul selections shoud be based on the provenance selection. 结果表明,马尾松制浆造纸材的良种选育应以材积和木材基本密度作为主要指标,首先进行种源的选择,在此基础上进行林分和个体的选择。
- On Genetic Variations of Wood Basic Density in Masson Pine Family 马尾松家系木材基本密度遗传变异的研究
- It's almost impossible to agree on a unified basic price. 几乎不可能商定一个划一的基本价格。
- Let me enlarge on this basic theme. 让我进一步阐述一下这个基本主题。
- Let's examine into the basic mechanism involved. 让我们把有关的基本结构搞搞清楚。
- The family is the basic unit of society. 家庭是社会的基本单位。
- Growth Regularity of Chamaecyparis pisifera and Variations for Latewood Percentage and Wood Basic Density 日本花柏人工林生长规律与晚材率、木材密度的变异
- VARIATION OF GROWTH RING WIDTH AND WOOD BASIC DENSITY OF RUBBERTREE AND THEIR MODELLING EQUATIONS 橡胶树生长轮宽度、木材密度变异及其预测模型的研究
- BASIC DENSITY VARIATION IN PROVENANCES OF EXOTIC LOBLOLLY PINE IN WUHAN AND ITS COMPREHENSIVE SELECTION 武汉引种火炬松种源基本密度的变异与综合选择的研究
- Children begin to learn basic morals in the kindergarten. 孩子们从幼儿园开始学习基本的道德规范。
- Traders sold basic commodities to the tribesmen. 商人向部落里的人出售生活必需的商品。
- The basic theme of these stories never varies. 这些故事的基本主题永远不变。
- BASIC is the language most programmers learn first. BASIC是大多数程序编制者首先学习的语言。
- It was Hart who created the basic formula of the western film. 正是这个哈特创造了西部电影的基本格局。
- The basic assumptions or principles of a subject. 基本原则,基本假设某一学科的基本假设或基本原理
- Comparison of the Wood Growth Ring Width and Basic Density between the Half-sib Progeny and Parent of Pinus tabulaeformis Carr 油松半同胞子代及亲本木材生长轮宽度与密度的研究
- Variation of Wood Fiber Characteristics, Microfibril Angle and Basic Density of Betula platyphylla in Natural Populations 白桦天然种群木材纤维性状、微纤丝角和基本密度的变异
- The basic density is 0.643g/cm3, The radial, tangential and volumetric shrinkage are respectively 8.4%、8.1% and 17.0%,differential shrinkage is 0.96; 径向全干干缩率8.;4%25,弦向全干干缩率为8