Nowadays, many sweaters are made of medium-length fiber instead of wool.
毛衣都不是羊毛制品，而是用中长纤维制作的。
Production processing of blended wool like fabric with medium length soybean protein fibre and medium length high shrink polyester fibre is introduced.
介绍了中长型大豆蛋白纤维与中长型高收缩涤纶纤维混纺仿毛织物的生产工艺。
Rock wool has good absorption function for medium and low frequency noise and various types of vibration noise. This will be very favorable for reducing noise and improving work environment.
尤其对中低频和各种振动噪声均有良好的吸收效果，十分有利于减少噪音污染，改善工作环境。
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