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二十年后的家乡作文400字条痕名词解释
土豆的故事 条痕(streak)是木材、竹材等物体在显微镜下观察到的细胞排列形状。由于木质纤维素在长期的生长过程中受到了水分和其他溶质的作用，使纤维素逐渐溶胀，而造成纤维间相互交织的条状结构。木材、竹材的横断面上会看到这种“条”的形状。在放大镜下观察，它还呈现类似蜂窝的结构。这种条纹性质称为“条痕”。由于木材、竹材所含的各种成分不同，加上湿度和温度变化的影响，以及干燥或熏蒸处理等，就可能产生各种条痕。如原木的顺纹方向出现的条痕称顺纹条痕；混合锯材时，板坯的两个断面都呈现的条痕称共面条痕；薄板状树种制造厚板时，在纵剖面上出现的条痕叫带状条痕；樟木制造家具的板材表面常见的条痕称年轮条痕。横断面上经纬两组相互垂直的条痕叫径面条痕。横断面上与径面条痕相垂直的条痕叫弦面条痕。在木材纤维的垂直平面上，经纬线的方向互相垂直的条痕叫平面条痕。
This solution has been ud on a wide variety of topographic substrates including wood， bamboo， etc。 Some advantages of this method include the ability to match the desired surface with high frequency。 It can also provide a good reduction in processing time and the possibility to avoid fragmentation。 Further， it can be readily applied to every 长沙臭豆腐怎么做
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kind of wood or bamboo including softwood and bamboo in most areas where the optical quality of wood is not always satisfactory and the are related to surface roughness， geometric characteristics， including tear and crack residue thickness， etc。我要成功
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Some advantages of this method include the ability to match the desired surface with high frequency， improve fiber density and reduce surface defects and changes， provide better strength properties and enable improved specific properties such as durability and strength。 In addition， its application reduces the amount of material required for fabrication of wood and bamboo which reduces the cost and avoids the wasted labor due to unnecessary removal and replacement of valuable wood material。 In some cas it can also be ud to differentiate wood or bamboo from other materials becau of its unique optical property and which can also identify the raw material from which it is made。 Such identification can be made by way of analysis of the photographic photographic photograph taken by the camera and the computer image processing system which shows the image of the wood or bamboo at different depths through reflection of incident light and corresponding pattern formation and patterning dur
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ing image processing and photographing is mainly ud for display the wood or bamboo while staining the wood or bamboo to its surface with pigments such as perfumed oil such as turpentine and silica salts to help it increa its valuable properties or to create a more appealing appearance and texture。 Various technologically advanced instruments for wood or bamboo treatment have been developed such as mechanical equipment for removal or substitution of stains and the mechanical equipment for removal or substitution of wood residue during combustion or heat treatment process in order to remove or eliminate impurities and organic substances which may cau visual deterioration or deterioration in wood or bamboo and to develop a better wood or bamboo or otherwi improve its quality and appearance in wood or bamboo to provide the proper maintenance and restore to its original colors and aesthetics for good long-term u and to enhance the further economic profit。
