qiāng zhī > jī qiāng dàn



bāo hán cí: bó lǎng níng 0.50in jī qiāng dàn FNBRG15.5mm jī qiāng dàn 12.7mm jī qiāng dàn zhōng guó 1954 nián shì 12.7mm dà kǒu jìng jī qiāng dàn zhōng guó 1956 nián shì 14.5mm dà kǒu jìng jī qiāng dàn