This gas mask can immunize you against poison gas.防毒面具能使你免遭毒气袭击.Drinking regularly can improve physical quality and enhance ability to immunize.经常饮用牛奶能提高人的身体素质,增强人体的免疫能力.After testing, this vaccine could be used to immun...
用钻 、 挖或掘的方式打通 ( 如, 隧道 )To form ( a tunnel, for example ) by drilling, digging, or burrowing.用钻铤连接探深板.Connect the feeling plate to the drill collars.介绍一种钻床用钻轴均布可调多轴头.Multiple spindles heads for drilling machine whose dril...