... crack a nozzle 微开水枪crack a valve 微开阀杆 cracking gas oil 裂化瓦斯油 ...
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A crack resistant valve plate assembly is provided for use in a slide gate valve.
一种用在滑动水口中的抗裂纹阀板组件。
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Never crack open a hydrogen cylinder to clear the valve of dust, as the escaping hydrogen may ignite.
由于溢出的氢可能着火，禁止啪地一声打开氢钢瓶。
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