名词
中文翻译：开放弧
同义词：
['open loop', 'open circuit']
例句：
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1. The engineer designed an openarc to connect the two pieces of metaltogether.
工程师设计了一个开放弧来连接两块金属。
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2. In electrical engineering, an openarc is a dangerous condition that canlead to fires.
在电气工程中，开放弧是一种危险的状况，可能会导致火灾。
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3. The scientist discovered an open arcin the circuit, which caused a shortcircuit.
科学家在电路中发现了一个开放弧，导致短路。