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1)  frequency distribution of shoot lengths
枝长频度分布
2)  frequency distribution of shoot lengths (first year shoots)
枝长频度分布(当年枝)
3)  the frequency of the tracheid
管胞长度频率分布
4)  frequency distribution
频度分布
1.
The method is as follows: use Laser Particle Sizer to obtain data of frequency distribution (calculous), cumulative distribution (integral) and then build mathematic model, lastly do research with computer and combined wit.
系统可及时地打印输出调整后的频度分布和累积分布图,以及相应的数据组。
2.
Based on the data collected from the 16 sampling plots and 256 sampling squadnats in Picea classifolia community at Qilian Mountains forest area in Gansu Province,this paper analyzed the frequency distribution,synusia structure,and dynamic of Picea ctassifolia community.
根据祁连山林区青海云杉群落16块样地256个样方的调查结果,对青海云杉群落的频度分布、层片结构、种群结构和动态进行了研究,结果表明:青海云杉群落频度分布表现为A>BD=E,群落具有分化和演替的趋势;群落季相与气候季节性变化相吻合,反映出群落对祁连山环境的适应性;受青藏高原寒冷气候的影响,生活型以地面芽植物占优势,具有寒温性针叶林的特征;群落结构基本合理,青海云杉呈稳定型种群。
3.
It is hypothesized that frequency distribution of both grammatical and lexical cohesion is much higher in good composition than that in poor ones.
此项研 究基于如下假设:高质量作文中的词汇衔接与语法衔接手段的频度分布(frequency distribution)比次低质量作文要高。
5)  length distribution
长度分布
1.
The characteristic of fiber length distribution and the quantitative evaluation of fiber length damage in wool tops;
毛条中纤维长度分布特征及损伤的定量估计
2.
By statistical means,the liquid slug length distribution was studied along the(vertical) pipe at different gas and liquid superficial velocities.
利用统计方法研究了在垂直上升管内不同位置以及不同气液表观速度下的液弹长度分布。
3.
The length distribution of carbon fibers in CFRC(carbon fiber reinforced cement) with different mixing mode was studied.
研究了在不同的搅拌制度下CFRC(carbonfiberreinforcedcement)中碳纤维的长度分布及其对CFRC的电阻率与强度的影响 。
6)  chord length distribution
弦长度分布
1.
These studies involve three research areas, namely, the determination of the electron density fluctuation in organic/inorganic hybrid materials, studies of the chord length distribution in mesoporous sieves, and investigation of the structural evolution of ZrO2 nanoparticles during calcination.
主要包括以下三个方面的内容:(1)有机/无机杂化材料中电子密度波动的研究;(2)弦长度分布函数材料的周期结构的研究;(3)纳米粉末晶化过程的研究。
补充资料:链长分布
分子式:
CAS号:

性质:对同一聚合物中高分子链尺寸不一的特性的描述方式。在高分子化学中,常用聚合度的多分散系数(或称不均匀指数,d)来表征;在高分子物理中,常用末端分布函数[φ(,N),其中为末端距,N为主链的键数]来表征。

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