lass=container-fluid><div class="row row-offcanvas"><div class="col-0 col-md-3 col-xl-2 sidebar-offcanvas"><nav class="sidebar d-print-none"><div class=spacer></div><div class=directory role=tablist><div class=card><div class=card-header role=tab id=header13><a data-toggle=collapse href=#collapse13 title="一些概念，理解它们有助于您更好地了解 Istio 系统的不同部分及其使用的抽象。" role=button aria-controls=collapse13><div><img src=/v1.0/img/concepts.svg alt=Icon class=page_ico