It's disbennifit to become protected film if change the velocity of flow frequently.
频繁改变水流速不利于在冷却器材料表面形成保护膜,而保护膜对于防腐蚀是至关重。
It's disbennifit to become protected film if change the velocity of flow frequently.
频繁改变水流速不利于在冷却器材料表面形成保护膜,而保护膜对于防腐蚀是至关重。
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