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1.A mixture of five parts of water and four parts of antifreeze will prevent freezing at 18 centigrade below zero; four parts of water and five parts of antifreeze reduce this to 22 centigrade below zero.
5成的水加上4成的防冻液可防止在零下18度以上不结冰，4成的水加5成的防冻液可将结冰点降低到零下22度。收藏指正
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