The diameter structure, the height structure, the density and the distribution pattern were worked out.
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 height structure and diameter structure of A. senticosus population relate with community environments and with its own age structure characteristics.
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 diameter structure, importance value, distribution pattern and survival curve of broad-leaved Korean pine of over-logged forest in Jingouling forest Farm was analysed.
对金沟岭林场阔叶红松过伐林直径结构、重要值、分布格局以及存活曲线进行了分析。
The population diameter structure can well be described by using nonparametric kernel method based on the sample data without assuming the population diameter distribution.
应用非参数核密度估计方法，可以由样本直径结构很好地描述总体直径结构，而无需假定总体的直径分布。
Full diameter structure of ball valve ensures the conformity of inside diameter of passage and pipeline, with the fluid resistance minimized and easy for cleaning pipeline.
全通径结构保证通道内径与管线内径一致，不但使流体阻力最小，也便于清洁通道。
The result is a tube of the length and diameter of the original scaffold, that is composed of collagen and smooth-muscle cells—a structure similar to a natural blood vessel.
所得物保持原来支架的长度和直径，由胶原蛋白和平滑肌细胞组成，其结构类似天然血管。
The structure, which has a diameter of almost 50kilometres (30 miles), has become a landmark for space shuttle crews.
这个同心圆结构直径长达50公里。
The structure and measuring principle of gradient furnace were introduced, and the curve of the foam temperature and bubble diameter was drawn.
介绍了梯温炉的结构及原理，根据测量结果绘制了发泡温度与泡径的关系曲线。
AW series of large diameter valves using pneumatic actuator fork-type transmission, reasonable structure, output torque, a double-acting and single acting.
大口径阀门采用系列aw型气动执行器拔叉式传动，结构合理，输出扭矩大，有双作用式和单作用式。
As long as the structure and the pore diameter of microporous tube can be controled appropriately, the vast majority of 0.2 micron particulates can be filtered out.
只要微孔管的结构与微孔管的毛细孔径控制恰当，可以将0.2微米的微粒绝大部份滤住。
A double casing sealed structure is used in the ionization chamber with thin Windows of large diameter.
电离室采用大口径双重密封结构，制作工艺难度大，要求高。
The constructing technique of the160? Meter diameter welding ball junction double-deck net shell steel structure roofing of which is in the leading position in China.
160米直径焊接球结点双层网壳钢结构屋面施工技术在国内处于领先地位。
In order not to make nickel ring up tank, outside groove diameter ratio inside groove is big, this on the structure solved the nickel ring grooving problem.
为了不使镍环起槽，外沟直径比内沟大，这在结构上解决了镍环起槽问题。
Result showed that different waterlogging depths have obvious effects on tree height, diameter at breast height, under branch height, trunk morphological structure, stem base form, and growth process.
结果表明：不同水分条件对池杉的树高、胸径、枝下高、干形、树干基部形态及生长过程均产生明显的影响。
Structure parameters of its variable intake system, such as diameter and length of intake manifold, switching speed of control valve switch, etc. , are optimized.
对该汽油机采用的可变进气系统的歧管直径和长度、控制阀开关的切换转速等结构参数进行了优化设计。
The equivalent diameter of structure cell also increases with increment of consolidation pressure.
结构单元体等效直径也随固结压力的增加而增大。
From the STMimages, we could see clearly the helix pitch and helix diameter of helix structure.
由STM图象中我们能清晰地观察到螺旋结构的螺距与螺径。
Results The acellular dermal matrix with normal colloid diameter and structure was made in this way, no cells in it.
结果：本方法制备的脱细胞真皮基质的胶原直径及排列结构均正常，无任何细胞成分。
Total weight of the structure was selected to be optimal objectives. Average diameter and wall thickness of the structural element were taken as design variables.
以结构的总重量最小为优化目标，以导管的平均直径和壁厚作为设计变量，考虑强度、刚度和稳定等约束条件。
At last, with the same model and the same conditions, the relationship between pile depth, pile diameter and the anti-earthquake ability of the structure was studied, some conclusions were made.
最后，针对同样的结构体系，利用以上程序分别计算分析了在其他条件一致的情况下桩深、桩径对结构整体抗震性能的影响，得出结论。
This paper introduces the structure, setting principle, orifice diameter calculation, selection and installation requirement for safety valve.
介绍了安全阀的结构、设计原则、喉径计算、选用和安装要求。
The advantage and application of double direction meridian line net shell structure of fixed roof for large diameter storage tank are introduced emphatically.
重点介绍了大直径储罐固定顶盖中双向子午线网壳结构的优点及应用情况。
As an example of the application, the changing structure of the diameter of an even-aged Jack pine stand is simulated and forecasted.
作为应用实例，对一块小叶松林分直径结构的变化进行了动态模拟和预测。
Triangle truss and pressure circle are designed as main beating structure to increase rigidity of large diameter operation platform.
以三角桁架和压力环作为主体受力结构操作平台，解决了操作平台直径大引起的刚度不足问题。
Large diameter cylinder structure was first introduced in China at the beginning of eighties, and it widely used in harbor engineering from then.
大直径圆筒结构从八十年代初介绍到我国之后，得到了较为广泛的推广和应用。
The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.
模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响，考虑了变注入工况和注汽管偏心结构对热损失的影响。
The structure, mechanism and software function of a optical rotating bar diameter measurement instrument system (ORBIS) are analyzed.
从系统结构、工作原理、软件功能等方面分析了旋转式光学线材测径系统。
The structure, mechanism and software function of a optical rotating bar diameter measurement instrument system (ORBIS) are analyzed.
从系统结构、工作原理、软件功能等方面分析了旋转式光学线材测径系统。
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