intrinsically safe system design
intrinsically safe system design
本质安全系统设计
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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An intrinsically safe signal telephone system special for mine use is dealt with in this paper including its development, construction, design features and application results.
介绍了一种专为煤矿井下使用的本安型信号电话系统的研究和它的构成、设计特点及使用效果。
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