从大学与中学英语教学衔接看大、中、小学英群“一条龙”
Published in 中国西部科技 • Jan 1, 2009
Authors:
祝传芳
Abstract
According to the machining characteristics of ceramic-particle-reinforced metal matrix composites, an experimental study on difficult-to-machine materials was carried out by two-dimensional (2D) rotatory ultrasonic combined electrolytic generating machining (RUCEGM), which organically combined an ul...
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