单词	vacuum pumping system
释义	vacuum pumping system 真空排气系统
随便看	the third stroke the third sumame thethird-system the third technical revolution the third term the third time the third time distribution the third time is the charm the third trough the third turn the third type checks the third type of hazard the third units the third U.S.-China Energy Efficiency Forum The third variable is the discount rate the third ventricle The thorns of roses prick rather badly The thorns on the roses scratched her hands The thorns tore her skin the third ventride of cerebrum the third volume the Third W the Third W- the third wafer The third was a human-sized cuboid