循环冷却水水质差是冷凝器表面结垢的主要原因。

The circulating cooling water of low quality is the primary reason for incrustation.

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盛着冰水的水罐表面在热天会结水珠。

A pitcher of ice water sweats on a hot day.

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趁热喝下巧克力饮料，冷了表面会结皮。

Drink your hot chocolate before it gets a skin on it.

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趁热喝下巧克力饮料，冷了表面会结皮。

Drink your hot chocolate before it gets a skin on it.

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