When this is done, the water freezes first, leaving the salts in the remaining unfrozen solution.
When this is done, the water freezes first, leaving the salts in the remaining unfrozen solution.
局部冷冻法是使盐水部分冷冻，这时先行冷冻的是水，盐则留在未曾冻结的液体中。
When this is done, the water freezes first, leaving the salts in the remaining unfrozen solution.
局部冷冻法是使盐水部分冷冻，这时先行冷冻的是水，盐则留在未曾冻结的液体中。