gas vacuum photo tube  气体真空光电管

HEAVY VACUUM GAS OIL  粗重真空制气油

LIGHT VACUUM GAS OIL  轻真空制气油

MEDIUM VACUUM GAS OIL  粗中真空制气油

Vacuum Fusion  真空熔结; 真空熔化

vacuum fusion method  真空溶化法

Vacuum fusion sintering  真空熔结; 真空熔烧

vacuum fusion sintering VFS  真空熔烧

VACUUM GAS OIL  粗真空制气油; 减压瓦斯油; VGO馏分油; 减压蜡油; 粗柴油; 减压粗柴油; 减压馏分油; 蜡油

vacuum gas oil hydrotreatment  蜡油加氢处理

vacuum gas pressure infiltration  真空液相浸渗; 真空气压浸渗

vacuum gas quenching  真空气淬

vacuum gas quenching furnace  真空气淬炉

vacuum-gas flushing packaging machine  真空充气包装机

Vacuum-gas pressure infiltration  真空气压浸渗; 真空气压渗流

alkali fusion reaction gas chromatography  碱熔反应气相色谱

Inert gas fusion  惰气熔融

Inert gas fusion method  惰气熔化法; 惰气熔融法

Inert gas fusion thermal conductivity method  惰气熔融－热导法