emergency pressure relief
emergency pressure relief
紧急泄压
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Emergency vent Manhole Cover is a kind of rapid relief-pressure device. Its technical performance, main material and main parts'materialare the same as HXF-HR type breather manholes.
紧急放空人孔是快速泄压装置，其技术性能、主要零部件材料与HXF-HR呼吸人孔相同。
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