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紧急关闭阀阀后直通用户的方案比较好。
After the emergency shutdown valve valve through the user's program is better.
youdao
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直通、直角铸钢可闭立式防浪阀；
Straight-through, right angle cast steel screw down vertical storm valve.
youdao
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直通、直角铸钢可闭立式防浪阀；
Straight-through, right angle cast steel screw down vertical storm valve.
youdao