种群密度随径级增大而减小。
The population density decreases with the increase of diameter class.
低径级个体占的比重极小，而中、高径级个体占的比重极大；
M. P. R. stand; trees of small and big DBH are less than trees of middle DBH in A. R. stand.
而传统使用长材刨片机、消耗大径级原木的技术，则成为历史。
Traditional way of using direct flakers which leads to consume large diameter logs becomes the history.
结果表明：木荷所受到的竞争强度随着林木径级的增大而逐渐减小。
The findings show that the intraspecific competition intensity in Shima superba decreases gradually with the increase in tree diameter.
分析了梭梭种群的径级结构、高度结构、密度和空间分布格局变化等。
The diameter structure, the height structure, the density and the distribution pattern were worked out.
树种数和树木的密度都随高度级、径级的增加而呈负指数或负幂函数递减。
Both the Numbers of tree species and tree density decreased as height class or diameter class increased, fitting both negative exponential and negative power equations.
结果表明，黄果厚壳桂所受到的竞争强度随着林木径级的增大而逐渐减小。
The results showed that the intraspecific competition intensity in C. concinna decreased gradually with increasing tree diameter.
刺五加种群的高度结构与径级结构的变化都与群落环境以及本身的年龄结构特点有关。
The height structure and diameter structure of A. senticosus population relate with community environments and with its own age structure characteristics.
地表可燃物载量调查采用线状相交可燃物取样调查方法，按不同径级调查可燃物载量。
The linear intersect combustibles sampling method is used for combustibles capacity measurement in different diameter grades.
为对象，分析了粗木质残体（CWD）的物种组成、径级分布、存在形式、腐烂等级。
This experiment was conducted to understand the species composition, diameter distribution, types and decay classes of coarse woody debris(CWD) on the 9.
基于种群径级结构分析，木荷种群密度随个体胸径的变化趋势类似于偏正态分布形曲线。
Based on analysis of population size class structure, the trend of population density of Schima superba changing with individual DBH was similar to skew normal distribution.
淮阴是我国引种栽培意大利杨树最早的地区之一，其大径级优质材主要用于胶合板的生产。
In China, Huaiyin is one of the earliest areas in introducing poplars from Italy. The big diameter and high quality trees are mainly used to producing plywood.
栎类次生林乔木的密度随高度级、径级的增加而递减，但树种丰富度却不随树木的密度增加而增加。
Tree density in the forest decreased with the increases of height class and diameter class, whereas species abundance did not increase.
常绿阔叶林内不同高度级、不同径级和不同样方斑块内的树种数都与树木密度呈显著的正相关关系。
There was a significant positive correlation between tree species abundance and tree density for trees of different height classes.
高度级和基径级分析表明群落内中等大小个体具有保守的生活史策略， 优势种杜鹃为远期衰退种群。
The analysis of height and base area classes of the shrub layer indicated mid-size individuals had conservative life strategies in this community, and R. simsii was a future declining population.
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。
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.
结果表明：各种植被类型中物种数与个体数对数成线性关系是一种普遍现象，且不受调查树木的径木级影响。
The results indicate that the rate of species accumulation is related to the logarithm of number of individuals in each vegetation type, independent of diameter classes.
导管分支丰富，形态自然，分布均匀，管壁光滑，分支导管与上一级导管管径过渡平缓。
Duct branch is rich in natural form of uniform distribution, wall smooth, branch pipe and tube diameter on the transition to a flat.
采用牛顿迭代法来求解各未知节点的经济水压，进而得出各管段的经济水头损失、经济管径和水源二级泵站的经济扬程。
The Newton iteration method is used to solve the economic pressure on the unknown node, so as to calculate the economic head loss and economic pipe diameter of each section,.
燃气输配管网的压力级制、管网型式、阀门配置和管径配置等是管网结构因素。
The pressure range of gas transmission and distribution network, network type, valve arrangement, pipe diameter arrangement, etc.
最短径通信网和多抢占优先级服务方式的研究对于网络规划和减少重载时的业务损失有重要意义。
The shortest routing communication network and multi priority have significant importance for network planning and traffic loss reducing under heavy loads.
针对双文氏管湿法除尘系统一级文氏管喉口存在的问题，开发设计了矩形定径式喉口。
Based on the problems existed in Venturi tube throat of double Venturi tube wet cleaning system, the rectangle sizing throat is developed and designed.
提出一种对工业塔，尤其是大塔径精馏塔进行数学模拟的实用方法非平衡级双区模型。
A new mathematical model, designated as two-zone nonequilibrium stage model, for simulating an industrial distillation tower, especially the tower with large diameter is presented in this paper.
提出了一种按体积法设计的单一粒径为主的密断级配沥青混合料。
A new highway construction material named single sized dense gap-graded asphalt concrete is presented in this paper.
注：考虑到将要开的花蕾个体横、纵径差异较大，第七级花蕾未经测量。
Note: The dada of the last stage of bud developing were not given in view of the biggish difference among individual buds.
利用纳秒级的非正弦波窄脉冲来传输数据，具有传输速率高、功耗低、安全性好、抗多径能力强以及成本低廉等许多优点。
It has many advantages, for example high transmission rate, low power consumption, good security, robustness to multipath and low cost.
热电偶套管为缩径尖头带法兰固定型，使用300等级的法兰。
The thermowell is a reduced tip flanged fixed type for use with class 300 flanges.
额外级网(esn)是在唯一路径网的前面增加一级开关所成的网络。
An extra stage network (ESN) is composed of a unique path network and an additional stage of switches.
额外级网(esn)是在唯一路径网的前面增加一级开关所成的网络。
An extra stage network (ESN) is composed of a unique path network and an additional stage of switches.
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