Therefore, it's an essential task for us to research the principle of abrasive wear, find the reasons of abrasive wear and invent a kind of effectively and economically method.
因此研究磨粒磨损的机理，探索造成机器磨损失效的原因，寻求有效而经济的耐磨材料和抗磨技术是一项刻不容缓的任务。
To invent is to make something that had no previous existence, such as a machine or a method, through the use of the imagination or through experiment, or to make up sth .
发明，指发明出某时期以前不存在的新东西或方法等，也可表示“虚构、编造”之意。
To invent is to make something that had no previous existence, such as a machine or a method, through the use of the imagination or through experiment, or to make up sth .
发明，指发明出某时期以前不存在的新东西或方法等，也可表示“虚构、编造”之意。
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