按范围算的同时,还得按数量浓度来算。。。
你要不要做个粗略的估算?
按范围算的同时,还得按数量浓度来算。。。
你要不要做个粗略的估算?
•
要算浓度吗? -- 请看台湾食品专家孙璐西教授的原话,塑化剂DEHP毒性比三聚氰胺毒20倍
-GU1212-
♂
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06/02/2011 postreply
06:07:53
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