是指木材细胞壁S2层中微纤丝方向与细胞主轴之间的夹角。或者可以理解为细胞壁中纤维素链的螺旋卷锁与纤维轴之间的夹角。
微纤丝角(microfibril angle , MFA) 是指木材细胞壁次生壁中层与细胞轴之间的夹角, 它是木材的重要超微特征, 是细胞水平上的一个微观量。
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...管，微纤丝角 [gap=892]Key words: Flooding degree, Pterocarya stenptera grown in the beachs, Vessel, Microfibrillar angle ...
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微纤丝角 Microfibrillar angle ; microfibril angle ; microfibrillar angle ; micro fiber thread angle 微导丝 Microguide wire ; MICRO-WIRE GUIDE ; Microguidewire ; micro-guide wire 微端丝 microspike .
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国内学者在杉木的木材性质及加工利用方面做了很多研究[1~6],而微纤丝角(m icrofibril angle,MFA)是其中的一项重要内容,它对木材性质有很大影响:与?
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Variations of microfibril angle of phyllostachys pubescens with different heights, ages, radial posi- tions were studied by X-ray diffraction technique.
利用了X射线衍射技术对不同高度、不同竹龄、在垂周方向不同位置的毛竹材微纤丝角变化规律进行了研究。
参考来源 - 毛竹材微纤丝角变异规律研究The average of microfibrillar angle was 8.4° and its radial variation was gradually decreasing from pith to bark. Regression results shown that microfibrillar angle was significantly related with age.
微纤丝角平均值为8.4°,由髓心向外呈递减趋势,与树龄的回归关系达到显著相关水平。
参考来源 - 人工林米老排木材材性及其变异性研究Moreover, the microfibril angel increased slightly from base to top of the stalks.
从基部往上,微纤丝角有略微增大,最大差异只有0.15°。
参考来源 - 毛竹材微纤丝角变异规律研究The amount of density、microfibril angle of Chinese fir were predicted by using radial basis function networks (RBF) combined with near infrared (NIR) spectrometry.
2.利用RBF神经网络结合近红外光谱(NIR)技术预测杉木中密度、微纤丝角。
参考来源 - 化学计量学与近红外光谱法在木材与奶粉品质分析中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
对55个杉木无性系管胞微纤丝角的遗传变异进行了研究。
Genetic variations on tracheid microfibril Angle of 55 Chinese fir clones were investigated.
结果表明，管胞直径和微纤丝角及生长轮宽度等指标表现为差异显著。
The results showed that there were distinct differences in micro-fibril Angle, width of growth-ring and tracheid diameter.
结果表明，微纤丝角径向自内向外略有减小，纤维股面积比径向自内向外逐渐增大；
The result shows that:(1)Micro-fibril angle increases gradually from the center to the edge in radial direction, and the surface area percentage of its fiber band has the same variability;
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