... protective relaying 继电保护 protective ring 保护环 protective screen 防护屏,防护屏蔽 ...
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protective ring for cylinder liner 缸套护圈
protective ring of rotor 转子护环
bearing protective ring 轴承保护环
protective conductor ring 保护导体环路
ring protective earth conductor 环形保护接地导体
·2,447,543篇论文数据,部分数据来源于NoteExpress
flinger , retainer
The company claims it will let them stay, and will ring their villages with protective fences.
ECONOMIST: Southern Africa
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