单词	賒一個月
释义	同CREDIT
随便看	high-vacuum high-vacuum cut-off high vacuum diffusion pump high-vacuum diffusion pump high vacuum distillation high vacuum electron beam welding plant high vacuum engineering high-vacuum fitting high vacuum furnace high vacuum gage high vacuum gauge high-vacuum insulation high vacuum operation high-vacuum orbital simulator high vacuum pump high-vacuum pump high-vacuum--pump high vacuum rectifier high-vacuum rectifier high-vacuum technique high vacuum tube high-vacuum tube high vacuum valve high-vacuum valve high vacuum valve device