高手请进!!!!概念问题?????...

&nbsp;请详细介绍一下<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">TIA/EIA 568/B</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;;">的标准和水平线独立应用的原则!!!!!!!!!!!!!十分感谢!!!</span>

&nbsp;<div class="O" vshape="_x0000_s1026"><div style="mso-char-wrap: 1; mso-kinsoku-overflow: 1;"><span lang="EN-US" style="FONT-SIZE: 16pt; COLOR: #3333cc; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体; mso-hansi-font-family: Arial; mso-color-index: 5;">EIA: Electronic Industries Association </span></div><div style="mso-char-wrap: 1; mso-kinsoku-overflow: 1;"><span lang="EN-US" style="FONT-SIZE: 16pt; COLOR: #3333cc; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体; mso-hansi-font-family: Arial; mso-color-index: 5;">TIA: Telecommunication Industry Association</span></div></div>