drop board hammer夹板落锤
drop-hammer吊锤
drop pile hammer落锤
Drop-hammer ram落锤头
drop forging hammer落锻锤
drop-hammer operator落锤工
Drop A Hammer Competition砸榔头比赛
drop-hammer test落锤试验
drop-hammer pile driver落锤式打桩机
Calibrated the circuit in the dynamic condition, especially the calibration using in the drop hammer and other issues are discussed in detail.
对于电路的动态标定和校准,特别是利用落锤实验装置进行动态的校准等问题进行了较详细的论述。
参考来源 - 微功耗小体积石油井下压力测试系统研究N（名词） → another name for drop forge