Objective To analyse the result of exterior quality control about 30 counties iodize salt labs.
目的对2001年30个县盐实验室外质控结果进行分析。
Objective To analyse the result of exterior quality control about 30 counties iodize salt labs.
目的对2001年30个县盐实验室外质控结果进行分析。
One of the attractions is that a campaign to iodize salt costs only 2 cents to 3 cents per person reached per year.
盐吸引人的一个原因是每年每人只要花费2到3分钱就可以食用盐。
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