The difficulty of dressing superhard wheel is one of the main obstruction to popularize application in industry.
超硬砂轮修整的困难，是生产上推广应用的主要障碍之一。
This paper reviews the application of chitin and its derivatives in medicine, including medical dressing, ophthalmic materials and pharmaceutical preparations.
本文综述了甲壳质及其衍生物在医药领域的应用，包括在医用敷料、眼科材料及药物制剂方面的应用。
Methods on the basis of animal experiment and clinical application, the former fixed appendix and dressing were replaced with elastic net and transparent gasbag.
在动物实验和临床应用的基础上，改用弹力网和透明气囊替代皮片传统的固定方法。
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