横撇弯钩和横折折折钩的区别？

http://image.baidu.com/i?ct=503316480&z=0&tn=baiduimagedetail&ipn=d&word=%E6%A8%AA%E6%92%87%E5%BC%AF%E9%92%A9&pn=0&spn=0&di=138807686820&rn=1&ie=utf-8&oe=utf-8&cl=2&lm=-1&cs=119878684%2C3193315722&os=1722567197%2C4077922464&ln=1969&fr=ala2&sme=0&cg=&objurl=http%3A%2F%2Fa.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2F18d8bc3eb13533fa92b93bc3aad3fd1f40345bcb.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fzit1w5_z%26e3Bkwt17_z%26e3Bv54AzdH3Fq7jfpt5gAzdH3Fcbnc98a0dnn0l90ndc_z%26e3Bip4s
到这个网址就能看到汉字笔画名称表