Warning: file_put_contents(): Only 0 of 6325 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/201990.com/index.php on line 55 ball point pen refill是什么意思，ball point pen refill的翻译，ball point pen refill音标、读音、用法和例句_耀久九英英词典
The double-tube ball-point pen consists of a penholder, two pen heads, two pen refills and two pen caps, wherein the penholder is provided with two parallel tubes; 本實用新型是由一個筆杆、兩個筆頭、兩個筆芯和兩個筆 帽組成。筆杆有兩個平行的琯道； ip.com