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- overhead drop hammer impact 高空落锤
- Vibration parameter measure on drop hammer impact test machine 在落锤冲击试验机上进行的隔振器振动参数识别
- METHOD TO CONFIRM IMPACT STIFFNESS BY DROP HAMMER IMPACT TEST MACHINE 用落锤冲击试验机确定隔振器冲击刚度的新方法
- The dynamic response of a single-layer reticulated shell to drop hammer impact, 李海旺,郭可,魏剑伟,秦冬祺,撞击载荷作用下单层球面网壳动力响应模型实验研究
- Dynamic Response Analysis While the Drop Hammer Impacting on the Falling Object Protective Structures 落物保护装置冲击中落锤的动态响应
- Because of its simplicity and convenience in use, drop hammer test machine is increasingly turned into the situation of important test equipment for studying impact capability of isolator. 摘要落锤试验方法，因装置结构简单，操作方便，现已成为在隔振器冲击性能研究领域中重要的手段。
- To forge or stamp(a metal)between dies by the force of a falling weight such as a drop hammer. 落锻借落下重量（如落锤）的力锻造冲压模具间的金属
- To forge or stamp(a metal) between dies by the force of a falling weight such as a drop hammer. 落锻借落下重量（如落锤）的力锻造冲压模具间的金属
- Over-loading of strong flash pyrotechnic composite was studied by using drop hammer simulation device. 采用大落锤冲击装置模拟研究了强闪光烟火药的过载能力。
- The drivability study of piling requires modeling of the hammer impact to calculate the input force wave at the pile head. 摘要桩的可打性研究需要模拟桩的锤击，计算出桩顶的应力波。
- Abstract: The epoxy plastic (EP) moulding surface of drop hammer die seriously presented embrittlement and deformation while drop pressing. 文摘:原有的环氧塑料落压模在使用过程中模具型面脆裂变形严重。
- The experimental modal analysis was performed on a two-story steel braced frame model excitated by simulated ambient vibrations and hammer impacts. 对一个两层钢支撑框架模型进行了模拟环境激励试验和力锤激励试验；
- instrumental drop hammer machine 仪器化落锤实验机
- The overhead costs are ridiculously expensive. 日常开支太高了。
- drop hammer pile hammer, drop hammer 蒸汽汽锤
- Seagulls were circling overhead. 海鸥在头顶山盘旋。
- Her overhead smash went out of the court. 她的高手扣球打出了场外。
- A flock of wild geese flew overhead. 一群野鹅从头顶飞过。
- A very nice set of glasses came under the hammer yesterday. 昨天拍卖了一套很精致的玻璃杯。
- The airplane was immediately overhead. 飞机几乎就在正上方。
