HAF是什么意思

HAF是什么意思 HAF是什么意思（化工原料） HAF是什么 谁知道HAF 601与HAF 604的区别? haf代码代表化学什么 social insurance and HAF怎么翻译 glnal;haf;l啊阿哥和 请问HAF是什么材料好像是橡胶里面的填充剂啊 英语翻译Dear Sirs,I have received your e-mail from my friend Haf we usually (t.) the bus to school at about haf past seven () l have a dyeam,l want to achieve in haf l a year 正方形ABCD被2条与边平行的线段EF、GH分割成四个矩形,P是EF与GH的交点,试确定∠HAF的大小并证明你的结论