the circulated quenching bobbine needs to be checked irregularly and replaced regularly to ensure the tow quenching quality;
不定期检查和定期更换环吹筒,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;
不定期检查和定期更换环吹筒,以保证丝束冷却;
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