This paper studies the stator vibration of an induction motor with square frame, and presents a novel multi-degree vibrating model which is superior to the conventional double-ring one.
对方形机壳异步电动机的定子振动分析模型作了研究，给出了一种比双环模型更适用的多自由度模型，并对典型结构的方形异步电机进行了实际分析。
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.
应彻底清洗所有和物料接触的部件，包括活塞缸、活塞头、O型圈、单向阀、灌装头、料桶、料斗等，发现破裂损伤的密封应及时进行更换。
For small batch production of rubber O-Ring, one-hole dies are mostly used. But there are many problems. Such as low productivity, easy to be impact-damage, etc.
橡胶O形圈的小批量生产，传统的方式主要使用O形圈单腔模进行，存在着生产效率低、生产过程中O形圈模具的型腔容易碰损而令模具失效等问题。
For small batch production of rubber O-Ring, one-hole dies are mostly used. But there are many problems. Such as low productivity, easy to be impact-damage, etc.
橡胶O形圈的小批量生产，传统的方式主要使用O形圈单腔模进行，存在着生产效率低、生产过程中O形圈模具的型腔容易碰损而令模具失效等问题。
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