linux nginx 这样配置什么意思求解答

Question

location ~ \.php$ {
                proxy_pass http://127.0.0.1:86;
                include naprox.conf;
        }
    location ~ /\.ht {
            deny  all;
    }
    location / {
            try_files $uri @apache;
    }
    location @apache {
             internal;
             proxy_pass http://127.0.0.1:86;
             include naprox.conf;
    }

看到一个 nginx 配置是这样的，但是看不懂啥意思,求解答！