approved shotfiring apparatus
approved shotfiring apparatus
[水利英汉词典]
approved shotfiring apparatusn.安全放炮器,防爆型放炮器
是什么意思，approved shotfiring apparatus的解释，approved shotfiring apparatus的翻译
approved shotfiring apparatus
[水利英汉词典]
approved shotfiring apparatus是什么意思，approved shotfiring apparatus的解释，approved shotfiring apparatus的翻译