The WC - CO coating produced by electrospark deposition on alloy can effectively improve substrate, swearing resistance.利用新型电火花强化技术,在钛合金材料表面强化WC-Co,可形成具有高耐磨性能强化层表面.In British English the toilet in private houses is calle...
A coral reef is built by the accretion of tiny, identical organisms.珊瑚礁是由许多相同的微生物不断堆积而成。The multiple migration - accretion concept of Gruner deserves mention.格鲁纳的多次迁移 ― ―增长说受到了重视.This formation, called an accretion disk,...