1) height and DBH structures
高度和径级结构
2) highness class structure
高度级结构
1.
The highness class structure of Castanopsis fargesii secondary forest in the middle subtropic was measured and analyzed.
以高度级为参考坐标 ,应用衡量优势种群及群落结构动态的失稳率、群落垂直空间的分享度、α -多样性及群落高度级梯度β -多样性等指标对中亚热带丝栗栲次生林群落高度级结构特征及其动态进行分析评价 。
3) Diameter distribution and height distribution
径级和高度分布
4) size-class structure
径级结构
1.
The community feature, size-class structure, the regulation of changing density were analyzed and the survival curve,the death curve and the life table were worked out.
分析了白皮松的群落学特征、径级结构及其密度变化规律;绘制了存活曲线和死亡曲线,从多角度研究了白皮松幼林种群的动态变化规律。
2.
(3) Although the size-class structure of Quercus phillyraeoides population showed normal distribution,it could maintain the dominant position in the community depending on the middle-class individuals as regeneration resource;additionally,the Q.
乌冈栎种群的径级结构呈正态分布,可依靠中等径级植株作为更新库维持目前的优势地位,加之其分布环境的特殊性,其群落仍是稳定的顶极群落。
3.
This article investigates the characteristic of distribution pattern, regeneration and size-class structure of Neolitsea homi lantha in different communities\' restoration in Shilin.
喀斯特地区生境严酷、地貌复杂、退化现象普遍,其植被恢复和重建已受到越来越多的关注;调查了石林地区不同恢复群落中团花新木姜子种群的分布格局、繁殖方式、径级结构等特征,结果发现:群落演替由最初到顶级,团花新木姜子呈由均匀到集群再到均匀的分布特征;团花新木姜子兼具有性和无性两种繁殖方式,恢复前期以无性更新为主,后期有性更新占优势;在恢复过程中,该物种先以数量优势占据生境,后期由于竞争保留少数大径级植株,其产生的大量实生幼苗只有少数在竞争中存活下来。
5) size structure
径级结构
1.
The size structure and competitive relationships of Larix chinensis in mixed-conifer forest types on Taibai Mountain,China;
太白红杉(Larix chinensis)混交林径级结构与竞争的关系
2.
Size structure analysis of Quercus wutaishanica (Liaodong oak) forest in a mountainous area of Beijing city indicates that while the oak forest is rather stable its regeneration mainly relies on stem base sprouting.
北京山区的辽东栎 (Quercus wutaishanica)林径级结构的调查分析结果表明 ,辽东栎林是稳定性的群落类型 ,其更新主要通过萌生来完成。
6) advanced structure
高级结构
1.
The prediction of advanced structures about protein and RNA;
蛋白质与核酸的高级结构预测
2.
The structure of polysaccharides can be classified into primary structure and advanced structure.
多糖的结构可分为一级结构和高级结构。
3.
The application of some detective methods,such as X-ray diffraction(XRD),nuclearmagnetic resonance(NMR),circular dichroism(CD),atomic force microscope(AFM),in β-glucan advanced structure analysis are reviewed.
综述了X-射线衍射法(XRD)、核磁共振法(NMR)、圆二色谱(CD)、原子力显微镜(AFM)等检测手段在β-葡聚糖高级结构分析中的应用研究进展。
补充资料：凸模高度调整结构
图1为凸模高度调整结构。凸模的上端面，与滑块接触。滑块右端开有T形槽，容纳螺钉的头部。转动螺钉，则滑块随之移动。由于滑块与上模座以斜面相互接触，而凸模在固定板内是滑动配合，因之凸模在合模方向的位置得以调整，调整后用螺母紧定。
图1 凸模高度调整结构
1-固定板 2-滑块 3-凸模 4-上模座
5-螺钉 6-螺母
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条