防冻 meaning in English

freeze-proofing; prevent frostbite; antifreezing

Drain piping may require to be protected against freezing .
泄水管要求有防冻保护措施。
Suitable noise and vibration isolation, and protection against freezing must be provided .
必须提供适当的消声和隔振以及防冻措施。
The valve can prevent freezing ， suitable in cold area
具有防冻性能，适用于寒冷地区。
Alternatives comparison of the antifreeze method for mine shaft
煤矿井筒防冻方式的比较
Heat preservation and frost protection of pipeline pots and equipments
管道罐体保温防冻

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