纺织专业英语课文

一个三级分层的方式在建模过程中聚合物curved-fabric-reinforced炉上进行了阐述。在微观上来看,分析光纤束纤维性能得到长丝和基质使用简单的方法。rule-of-mixture性能在细观水平、代表性体积单元性能得到了纤维束和矩阵材料性质的使用介观网。随后的更新细观节点米

1 Lesson One Cotton Growing Cotton is the world's most widely used fiber. Its popularity stems from both its relative ease of production and its applicability to a wide variety of textile products. The price of cotton yarn, however, is strongly dependent upon the cost of labor, so that in the industrialized nations, where labor is expensive, cotton yarns may be relatively high priced. Until relatively recent times, however, cotton was not as widely used as wool and linen. This was because it was easier to spin wool or flax into yam because of their greater length. In addition, cotton fibers have to be separated from the seeds to which they cling. This procedure was very tedious and time-consuming when done by hand. Early machinery could be used on only the longest staple cotton. So labor costs tended to be very high. The invention of the saw-type cotton gin made possible the exploitation of the short staple fiber, which thrived in the Carolinas and Virginia of the United States. The dramatic increase in productivity, coupled with the low cost of labor in the southern United States, gave cotton a continually expanding portion of the world textile market. Increasing mechanization of fiber and yarn production helped keep the cost of cotton goods low. The, development of the textile machinery enlarged the production base. Cotton cultivation requires warm climates with a high level of moisture or irrigation. The growing season is from six to seven months long. During this period the seeds sprout and grow, producing a white blossom in about 100 days. The blossom produces a seed pod, which matures during the next two months. When the pod bursts, the cotton fibers are ready for picking. Before yam manufacture, cotton is graded, sorted, and blended to insure uniform yam quality. Cotton is graded on the basis of color, staple length, fineness, and freedom from foreign matter. In the United States, cottons are divided into grades according to length of staple, uniformity, strength, color, cleanness and flexibility. These are compared with a standard supplied by the United States Department of Agriculture. The standard provides 6 grades above and 6 grades below the Middling grade. The most common grades are: (1) Strict good middling. (2) Good middling. (3) Strict middling. (4) Middling. (5) Strict low middling (6) Low middling. (7) Strict good ordinary. The cotton fiber may be from 0.3 to 5.5 cm long. Under the microscope it appears as a ribbon like structure that is twisted at irregular intervals along its length. The twists, called convolutions, increase the fiber-to-fiber friction necessary to secure a strong spun yarn. The fiber ranges in color from a yellowish to pure white, and may be very lustrous. However, most cotton dull. A cross-sectional view reveals that the fiber is kidney-shaped with central hollow core known as the lumen. The lumen provides a channel for nutrients while the plant is growing. The fiber consists of an outer shell, or cuticle, which surrounds the primary wall. The primary wall, in turn, covers the secondary wall surrounding the lumen. The cuticle is a thin, hard shell which protects the fiber from bruising and damage during growth. In use as a textile fiber, the cuticle provides abrasion resistance to cotton. Lesson Two Cotton Properties and Uses A relatively high level of moisture absorption and good wicking properties help make cotton one of the

刺绣拥有悠久的历史。根据记载，早在商朝和西周时期就已有了刺绣品，如蟠龙飞凤纹绣、龙凤虎纹绣、飞凤纹绣等。这些乡品均出土于江陵马山一号楚墓。除了龙凤虎，最常见的绣品图案有蛇、云纹、花、几何、人物等。刺绣生动逼真，精美的形态展现了“龙腾虎跃”、“龙飞凤舞”的景象。构图布局严谨，富有想象力。色彩丰富，用色和谐。它们是极其珍贵的古代刺绣品。从中我们可以看出传统刺绣工艺在当时已发展到相当成熟阶段，形成一种独特的装饰方式。如今，人们重视设计的个性化、时尚化、多样化和中产阶级化。因此刺绣床上用品和多样化工艺更受到人们的重视。它们不仅能美化丰富人们的卧室，还能给人们精神上的愉悦，让人们从美丽的卧室风光中享受美感。

这个你可以用谷歌翻译一下。