the circulated quenching bobbine needs to be checked irregularly and replaced regularly to ensure the tow quenching quality;
不
期检
期更换环吹筒，以保证丝束冷却；
the circulated quenching bobbine needs to be checked irregularly and replaced regularly to ensure the tow quenching quality;
不期检期更换环吹筒，以保证丝束冷却；
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