查询词典 minimum density

Based on surveying data of sample plots of Phyllostachys pubescens Mazel in Xian＇an district of Xianning City,the effects of aspect,gradient,slope,humus thickness,crown density and stock density on the increment of Phyllostachys pubescens Mazel.were analyzed.

以咸宁市咸安地区40块毛竹标准地的调查资料为基础，分析了坡向、坡度、坡位、腐质层厚度、郁闭度和立株度对毛竹胸径生长量的影响。

The soil and water losses are very light and its difference is not notable in woodland of different tillage mode of economic forest, relatively the soil and water losses is lighter hi protecting slope model than in clearing model in low crown density benching economic forest such as Chinese chestnut, but the soil and water losses is lighter in clearing model than in protecting slope in high crown density benching economic forest such as bayberry.

不同耕作模式成年经济林地水土流失情况都较轻微，差异性不显著。相对而言郁闭度小的经济林如板栗林地台地护梯方式要比台地清耕方式好，郁闭度大的经济林如杨梅林地台地清耕方式要比台地护梯方式好。

In this article, introducing subgrade max dry density and optimum water content, it introduces site density experiment methods（including cutting ring method, sand replacement method, applicable condition）instrumentand procedures.

本文在介绍路基土、路面基层最大干密度及最佳含水量方法的同时，还对目前现场密度试验普遍采用的方法：环刀法、灌砂法、核子湿度密度仪法适用条件、仪器、方法步骤等做了详细介绍。

According this problem, firstly this paper delves into radio circumstance of the band, frequency selecting rule and spectral density estimation. Basing on this research, this paper puts forward a frequency selection scheme basing on estimating spectral density of channels in 2.4GHz~2.5GHz.

针对此问题，本文首先深入研究了该频段无线电环境、选频准则及功率谱估计理论，在此基础上提出一种基于信道功率谱估计的选频方案。

This paper described the principle of plane ultrasonic spreading abroad in the liquid coming into being ultrasonic grating,educed the density and refractive index changing rule basis continuity equation of not-ideal liquid and Lorentz-Lorenz law,expressing the transformation of the index and refractive index satisfaction similar equation of standing wave,and described the relation curve of the standing wave form at a few special times,liquid density and refractive index periodic variety according to the res...

描述了平面超声波在液体里传播形成超声光栅的原理；根据非理想流体对应的连续性方程和Lorentz-Lorenz定律，推导了液体光栅中液体密度与折射率的周期性变化规律，表明液体密度和折射率变化满足相似的驻波方程；根据推导的结果描绘了几个特殊时刻的驻波波形、液体密度、折射率周期性变化之间的关系曲线；进而由折射率周期性变化规律分析了超声驻波自身像的形成原理，并给出了CGS型超声光栅声速仪利用超声驻波自身像测量声速的方法与实验结果。

The results reveal that under the conditions of the third-class sites in the Southern Fujian mountain areas,the suitable planting density is 1250～1798 trees/hm 2 for building eucalyptus short-cycle industrial raw material forests; and adopting the present density to conduct afforestation may culture the best-selling dimension lumber with higher growth and may obtain better economic benefits.

通过对 7年生巨尾桉不同造林密度生长量、生物量分析，结合目标培育径阶所确定的理论适宜株数的研究，结果表明，在闽南山地Ⅲ级立地条件下，营造桉树短周期工业原料林适宜造林密度为 1 2 5 0～ 1 798株·hm-2 ，采用该密度造林不但可以培育市场畅销的规格材且生长量较高，可取得较好的经济效益

The leakage current of poly-Si TFTs is owing to the high drain electric field and large trap state density at drain junction. In this thesis, we found the silicon nitride film as the diffusion barrier prevents the hydrogen atoms downward diffusion and accumulated at the channel to further reduce the trap state density.

对於复晶矽薄膜电晶体其漏电主要与缺陷密度和集极电场强度有关，在本篇论文中我们发现氮化矽绝缘层能够有效的阻挡氢原子向下扩散而累积在通道之中，更进一步的去修补通道中的缺陷。

Taking Zhengdan958 as material,six density levels were designed to investigate the effects of different planting density on physiological decline on ear leaf of summer maize.

以郑单958为供试品种，在大田条件下研究不同种植密度对夏玉米果穗叶生理功能衰退特性的影响。

In these factors, reducing population density (especially city population density), improving earthquake-proof capability of buildings and enhancing forecasting accuracy, which could he affected by human activities, are more important for reducing the casualties in earthquakes.

作为人为可控预测指标，减少人口密度特别是城市人口密度，提高建筑物抗震能力及预测预报水准，对於减少地震灾害人员伤亡起更重要的作用。

The anodes have improved assembly density, high capacity and high energy density.

该负极具有改善的装配密度、高容量和高能量密度。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。