哪位大神给我翻译一下这都是啥意思

for i=1:numel(dar)
h1(i)=sqrt(10^(-4.46-3.1*log(dar(i)./10)));
g1(i)=sqrt(10^(-4.46-3.1*log((0.4-dar(i))./10)));
d11(i)=(sigma_a^2+sigma_n^2.*yita)./(Pa*abs(h1(i)).^2);
d21(i)=(sigma_a^2*sigma_n^2)./(2*yita.*(abs(g1(i))).^2*(abs(h1(i))).^4*Pa^2);
c1(i)=(1/d21(i)-1).*exp(-1);
q1(i)=lambertw(c1(i));
tao1(i)=(1-d21(i).*(1+q1(i)))/(1-d21(i).*(1+q1(i))+q1(i));
R1(i)=1/2*(1-tao1(i)).*log2(1+tao1(i)./(d11(i).*tao1(i)+(d21(i).*(1-tao1(i)))));
end