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含水率梯度     
相关语句
  moisture content gradient
    (3) Also as the first ever practice of research method, the study mensurated the distribution of temperature and moisture content profiles in sealed wood of Chinese Fir whose opposite faces are subjected to constant but different temperature for a short time, the ratio of moisture content gradient to temperature (dM/dT).
    3、首次通过试验测定了封闭杉木木材试件在短期温度梯度作用下,木材内部温度场和含水率场的分布,含水率梯度与温度梯度比值(dM/dT)的大小及其影响因素。
短句来源
    The result shows: moisture fluxed into the wood from the warm surface to the cold surface even if opposite faces of the sealed wood assembly were exposed continuously to different but constant temperature for a short period, the absolute value of the ratio of the moisture content gradient to the temperature gradient(dM/dT) is below 0.9%/°C;
    研究表明:在较短时间温度梯度的作用下,木材内的水分会由木材热端向冷端迁移,含水率梯度与温度梯度的比值(dM/dT)在0.9%/℃以下;
短句来源
    For the exist of moisture content gradient and thermal gradient, the thickness swelling is larger than the line swelling and so the thickness swelling is the emphasis of study.
    由于含水率梯度和温度梯度的存在,使得厚度膨胀远远高于线膨胀,因此厚度膨胀历来是尺寸稳定性的研究重点。
短句来源
    Moisture transfer caused by heat diffusion and a moisture content gradient could be neglected.
    因热扩散、含水率梯度引起的水分迁移可以忽略不计.
短句来源
    Before kiln drying it is good to process conditioning treatment to reduce the moisture content gradient.
    板材窑干前应进行调湿处理,以降低含水率梯度
  moisture gradient
    The results show that, the effect of heat proliferation was produced even in the function of short-term temperature gradient; at the same time, an moisture gradient was formed in he inner part of wood which was opposite to the temperature, and the ratio of dM/dT went below 0.9%/°C.
    研究表明:木材即使在短期温度梯度的作用下也会出现热扩散效应,在木材内部形成与温度梯度相反的含水率梯度场,dM/dT的比值在0.9%/℃以下;
短句来源
    The moisture movement was mainly controlled by both temperature gradient and moisture gradient The higher the drying temperature was, the bigger the moisture diffusion coefficient would be at every drying stage.
    竹材热压干燥过程中水分移动,主要是温度梯度和含水率梯度作用下的水分移动。 干燥温度越高,干燥各阶段水分扩散系数越大;
短句来源
    The results indicated that the moisture content in the face layer was higher than in the center, when reducing the height of mat, increasing the time of microwave preheating and moisture content of mat. This moisture gradient can improve the mass and heat transfer during hot pressing.
    结果表明,减小预压高度,增加微波预热时间,适当的调高板坯初含水率有利于在板坯中形成表层含水率略高于芯层的含水率梯度
短句来源
    The stress produced during the process of drying had a certain relation with moisture gradient,shrinkage,moisture and stress index.
    干燥过程中产生的应力与含水率梯度、干缩量和含水率、应力指标,存在一定的相关关系。
短句来源
    The moisture movement was mainly controlled by both temperature gradient and moisture gradient.
    竹材热压干燥过程中的水分移动,主要受温度梯度和含水率梯度的共同作用.
短句来源
  “含水率梯度”译为未确定词的双语例句
    NEM-1 MOISTURE METER OF WOOD FOR DRY KILN CONTROL
    NEM-1型窑内数字式木材含水率梯度测定仪
短句来源
    THE EFFECT OF MOISTURE GRADIENT AND TEMPERATURE GRADIENT ON MOISTURE TRANSFERIN WOOD DRYING BY FAR INFRARED RADIATION
    含水率梯度和温度梯度对远红外干燥木材的影响
短句来源
    The intermittent heating makes the biggest value of stress backward and relax the drying stress, the more long result in intermittent time, impression is more obvious, especially Mongolian Oak and Manchurian Ash.
    间歇加热方式降低了含水率梯度,削弱了锯材的干燥应力并推迟了应力最大值到来的时机,间歇时间越长效果越显著。
短句来源
    The MC grade, shrinkage and wood surface stress during drying progress was the largest in consecution heating, and was least in fluctuating-heats (6h). The effect of heating methods on dry quantity of small-diameter lumbers was significant.
    干燥过程中锯材的含水率梯度、表层应力和干缩量均以连续加热干燥试验最大,波动2时干燥试验次之,波动6时干燥试验最小。
短句来源
    The author gained a good deal of enlightenment from the industrial production and scientific research development of wood drying that has been underway both at home and abroad, the idea is formed of wood drying under floating pressures, i. e., forcing the energy to enter rapidly the interior of wood by means of increasing pressure at rising temperature;
    作者从国内外木材干燥工业生产和科研动态中得到启示,形成了关于浮压干燥的设想:加压升温,向木材内部迅速注入能量; 将介质压力作为重要的控制参数一木材干燥第四要素,创造有利于内部水分向表层移动的初始条件与外界条件,在含水率梯度不大的情况下加速干燥过程。
短句来源
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  moisture content gradient
The moisture content gradient opposite to the temperature gradient was established, and the dM/dT was below 0.9%/°C.
      
This paper gives the results of a determination of the moisture content gradient and an investigation of the moisture distribution in a granular material during drying in a fluidized bed.
      
This specially developed finite element analysis is applied here to predict the warping due to an assumed moisture content gradient of a solid wood panel (Douglas fir).
      
This specially developed finite element analysis is applied here to predict the warping due to an assumed moisture content gradient of a solid wood panel (Douglas fir).
      
Experiments were undertaken to measure the moisture content gradient and used to verify the model.
      
更多          
  moisture gradient
Plant communities were ordinated along the moisture gradient.
      
It is shown that the radar ray path is not very sensitive to sharp vertical gradients of refractive index caused by the strong temperature inversion and large moisture gradient in this case.
      
A comparative study on orthopteroid assemblages along a moisture gradient in the Western Carpathians
      
Orthopteroid assemblages (orders Orthoptera and Mantodea) were compared along moisture gradient at five sites of the Slovak Karst in southern Slovakia.
      
There were two principal and five subordinate assemblages within the moisture gradient.
      
更多          
  gradient of moisture content
The decisivefactor is the gradient of moisture content and resulting sorptivestresses must be taken into account because their magnitude is of thesame order as the load induced bending stresses.
      


The author gained a good deal of enlightenment from the industrial production and scientific research development of wood drying that has been underway both at home and abroad, the idea is formed of wood drying under floating pressures, i. e., forcing the energy to enter rapidly the interior of wood by means of increasing pressure at rising temperature; introducing medium pressure as the major parameter to be controlled-the very fourth essential factor of wood drying; creating

作者从国内外木材干燥工业生产和科研动态中得到启示,形成了关于浮压干燥的设想:加压升温,向木材内部迅速注入能量;将介质压力作为重要的控制参数一木材干燥第四要素,创造有利于内部水分向表层移动的初始条件与外界条件,在含水率梯度不大的情况下加速干燥过程。实验结果表明,浮压干燥是可行的,是一种有发展前途的新型木材干燥方法。

The NEM-1 moisture meter is designed for wood drying kiln control. It can measure moisture contents in three points which have different depthes from the lumber surface. So we can know moisture gradients. The meter is controled by a Single Board Computer. At the same time it can measure temperature in the three different points.

NEM-1型数字式木材含水率梯度测量仪是为木材干燥窑而设计的。它能测量离木材表面0.5cm、1.5cm、2.5cm三个深度处的含水率,从而算出木材含水率的平均梯度。该仪器由单板机控制,除测量含水率外,还可以测量不同深度处的温度。

Features of the strains in some southern hardwoods during the first drying stagewere studied under various temperature and equilibrium moisture content.The results shownthat surface layer represented tensile elastic strain and plastic strain , while internal layerrepresented compress strain. The maximum tensile elastic strain was the main factor whichresulted in surface-checking,and the set caused by plastic strain was the reason of inner-checking.The elastic and plastic strain were greatly influenced by the...

Features of the strains in some southern hardwoods during the first drying stagewere studied under various temperature and equilibrium moisture content.The results shownthat surface layer represented tensile elastic strain and plastic strain , while internal layerrepresented compress strain. The maximum tensile elastic strain was the main factor whichresulted in surface-checking,and the set caused by plastic strain was the reason of inner-checking.The elastic and plastic strain were greatly influenced by the equilibrium moisturecontent and interrelated with the MC gradient.Drying time during the first drying stage bedetermined by the ratio of the MC when the surface reached the maximum tensile strain andthe initial MC.

在不同温度和平衡含水率条件下研究南方阔叶树材干燥初期应变特点。试验结果表明,干燥初期表层呈现伸张弹性应变和塑性应变,内层为压缩应变,伸张弹性应变的最大值是产生表裂的主要原因,塑性应变而引起的表层固定变形是产生内裂的原因。弹性和塑性应变受平衡含水率的影响较大,并且与含水率梯度存在相关关系、干燥初期阶段的延续时间,可由表层达到最大伸张应变时的含水率与初含水率的比值来确定。

 
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