准确率:90%,误差率5%
并且,行事时,要自信,要大喊:男娃,男娃,男娃-----
或者:女娃,女娃,女娃---
去商店买一包酸硷试纸,每天放进去测量
本帖于 2010-08-25 09:31:49 时间, 由超管 论坛管理 编辑
准确率:90%,误差率5%
并且,行事时,要自信,要大喊:男娃,男娃,男娃-----
或者:女娃,女娃,女娃---
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