円の周りにラベルが付いた完全な円を作成するにはどうすればいいですか

Question

私は説明のためにこの半円を手に入れました、そして、私が持っているもののようにメートル法のラベルが付いた円のように2つの口が互いに接触する必要がありますムウェ

% !TeX program = lualatex
\documentclass[a4paper,14pt]{extarticle}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry} 
\usepackage{amssymb,amsfonts,amsmath,graphicx,autobreak}
\usepackage{changepage,mathtools,amsthm,tikz,blindtext}
\usepackage{inputenc,float,caption,subcaption,enumitem}
\usepackage[font=large,labelfont=bf,font=normalfont,labelsep=colon]{caption}
\usepackage[font=small,labelfont=bf,font=bf,labelsep=colon]{subcaption}
\usepackage{csquotes} %for single quoatation mark
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%for arc and angles
\usetikzlibrary{calc, angles}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\RequirePackage{luatex85}
\usepackage{luamplib}
\begin{document}
    \begin{figure}[H]
    \mplibtextextlabel{enable}
    \begin{mplibcode}
        beginfig(1);
        path C, C'; 
        C = subpath(2,0) of fullcircle rotated 45 scaled 640;
        C' = C scaled 1.02;
        numeric p[];
        p1    = 1/8;
        p2    = 2/8;
        p3    = 3/8;
        p.t   = 5/8;
        p.tt  = 6/8;
        p.ttt = 7/8;
        p.n   = 9/8;
        p.l  = 10/8;
        p.zz = 13/8;
        for t=  1/64 step 1/64 until   3/64: drawdot point t of C' withpen pencircle scaled 1; endfor
        for t= 29/64 step 1/64 until  35/64: drawdot point t of C' withpen pencircle scaled 1; endfor
        for t= 61/64 step 1/64 until  67/64: drawdot point t of C' withpen pencircle scaled 1; endfor
        for t= 89/64 step 1/64 until  95/64: drawdot point t of C' withpen pencircle scaled 1; endfor
        for t=116/64 step 1/64 until 119/64: drawdot point t of C' withpen pencircle scaled 1; endfor
    
        forsuffixes $=1,2,3,t,tt,ttt,n,l,zz:
        draw point p$ of C -- point p$ of C' withcolor 2/3 blue;
        label.top("$x_{" & 
            if     str $ = "tt" : "t+1" 
            elseif str $ = "ttt": "t+2" 
            elseif str $ = "zz" : "n+l-1" 
            else: str $ fi
            & "}$", point 1 of C') rotated (45-45*p$);
        endfor
    
            draw C;
    
        vardef mark(suffix a, b)(expr s, T) =
        save arc; path arc;
        arc = subpath(p.a, p.b) of C scaled s;
        interim ahangle  := 180; interim ahlength := 5;
        drawdblarrow arc withcolor 2/3 green;
    
        save pp; picture pp; 
        pp = thelabel(T rotated angle direction 1/2 of arc, point 1/2 of arc);
        unfill bbox pp; draw pp;
        enddef;
    
        mark(1, t, 0.95, textext("$B_1$"));
        mark(2, tt, 0.90, textext("$B_2$"));
        mark(3, ttt, 0.85, textext("$B_3$"));
        mark(n, zz, 0.95, textext("$B_k$"));
    
        endfig;
    \end{mplibcode}
    \caption{Circular Block Bootstrap}
    \label{fig5}
\end{figure}

\end{document}