单词	失效弹簧
释义	同死弹簧--失效弹簧
随便看	low vacuum low vacuum electron beam welding plant low vacuum jet condenser low-vacuum protective device low vacuum trip low vacuum valve low valve gate circuit lowveld low velocity low-velocity low velocity camera tube low-velocity channel low-velocity coorection low-velocity drop low-velocity electron low-velocity--electron low-velocity gun low velocity layer low-velocity layer low-velocity layer shooting low-velocity neutron low-velocity--neutron low velocity scanning low velocity zone low-velocity zone