ring width

Significant negative correlations between ring density and ring width were shown in the variation affected by clones.

年轮平均密度与年轮宽度的关系在年龄影响下的变异过程中分析，表现为不显著的负相关，而在无性系影响下的变异过程中分析，多数情况下相关显著。

Response of Annual Ring Width of Pinus sylvestris var. mongolica Plantation to Climate Change

人工林樟子松生长轮宽度对气候变化的响应

Tree stem surface area formula was derived by predicting model with relative height d 0.1. Multiply it by stem mean annual ring with an annual volume growth model of standing tree was then derived. The mean ring width was calculated to mean diameter growth.

本文采用相对高d（0.1）预估模型导出树干表面积式，然后乘以树干平均年轮宽度推出了立木材积连年生长量模型，最后将平均年轮宽度转换成平均直径生长量。

The influence of random position error of zones, width error of zones, interdiffusion and roughness on the efficiency and resolution of X-ray zone plates ( ZP) is analyzed by adding the analytic expression of the diffraction field of every ring.

利用叠加所有圆环的解析近似衍射场的方法来计算和分析随机环带位置误差、宽度误差、扩散和粗糙度对X射线波带片的效率和分辨率的影响。

Whether annual ring width markedly affects both strength properties and shrinkage properties of the wood is discussed.

讨论了年轮宽度与木材强度性能和干缩性能的关系。

The paper compares and analyses growth ring width and basic density of Pinus tabulaeformis which grow in Badu forest farm of Longxian county in Shaanxi Province.

比较分析了陕西省陇县八渡林场油松（pinus tabulaeformis）木材的生长轮宽度、基本密度。

Based on the working principle of non-contact capacitance sensor, influence of the edge effect of gauge head and width of protecting ring are studied, gauge head for measuring blind hole is designed to sight the centers of two adjacent holes.

基于非接触式电容测孔传感器的基本原理，研究了电容测头的电场边缘效应的影响及保护环的宽度选择，设计了电容瞄准测孔传感器的测头用于对相邻小孔的中心进行瞄准定位；

Study on relationship between sound vibration parameters and growth ring width and latewood percentage of Picea genera wood

云杉木材声振动性能与生长轮宽度、晚材率之间关系的研究

The Genetic Analysis of Cunninghamia lanceolata Family Annual Ring Width and Density Composition Characteristics

杉木家系年轮宽度及年轮密度组成性状遗传分析

Taking 17 year old Ginkgo biloba as test material, the effects of temperature and precipitation on wood ring width, ring density maximum density and minimum density were studied.

以北京地区17年生银杏为试材，研究了气温和降水对银杏木材年轮宽度、年轮密度、最大密度、最小密度的影响。

Effects of Variance Coefficient of Growth Ring Width on Sound Vibration Parameters of Picea Wood

云杉属木材生长轮宽度变异系数对声振动参数的影响

As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.

造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。

Preliminary study on the correlation of annual growth ring width of Beijing poplar climatic factors

北京杨年轮宽度与气候因子相关性初探

There are significant effects for thinning intensity on growth ring width, late wood percentage, growth ring density and hardness of Fraxinus mandshurica.

对生长轮宽度、晚材率、生长轮密度、木材硬度有显著影响；

Influence of Main Parameter Variation of Ring for Tapered Roller Bearing on Bearing Width

圆锥滚子轴承套圈主参数变化对装配高的影响