YZX127 hydro hammer used for full face drilling is described with its structural characteristics, performance parameters and laboratory test results as well as the application prospects introduced.
介绍了用于全面钻进的YZX127型液动潜孔锤的结构特点、性能参数、室内岩样实钻试验效果，展望了其广阔的应用前景。
Billy slapped George's face and now they are going at it hammer and tongs in back of the house.
比利打了乔治一耳光，所以现在他俩在屋子后面激烈地打斗。
For a modest $49.99, revelers get an orange jumpsuit, handcuffs, a face mask in Bernie's likeness and a spoof plastic hammer.
仅需花上49.99美金，万圣节的狂欢者们就可以得到一件橘黄色的监狱服、一副手铐、一个麦道夫的肖像面具和一个玩具塑料锤。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
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