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- The results indicate that although the impact frequency of DTH hammer decreased somehow, the impact power increased. 结果冲击频率虽然有所下降,但其冲击功却有升高的趋势。
- The theory and test proved that the impacting frequency of hydraulic rammer can be adjusted by pipe hammer stroke.The influences of stroke on characteristics of hammer are discussed. 通过理论和实验证明改变液压夯管锤的冲击能和冲击频率,比较简单而经济的方法是调节液压夯管锤的行程,并讨论了改变行程对液压夯管锤的性能有哪些影响。
- The test bed can be used to measure such parameters as impact frequency, r. p. m of a rod and air consumption of pneumatic rock drills to evaluate their performances. 利用该试验台可检测气动凿岩机的冲击频率、钎杆转速、耗气量等参数,以判别凿岩机质量。
- This paper discusses the wonting principle ot the vaive-type counter-actmg nyaraunc impact too1s , and presents methods for calculating impact force and impact frequency. 本文论述了阀式反作用液动冲击器的工作原理,提出了计算冲击力和冲击频率的方法。
- instantaneous impact frequency spec-trum analysis method 瞬态冲击频谱分析法
- Keywords foam DTH hammer;impact power;impact frequency; 泡沫潜孔锤;冲击功;冲击频率;
- He varied the transmission frequency. 他变换了无线电传送的频率。
- These bullets fragment on impact. 这些子弹射中物体时爆炸成碎片。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位,等于每秒一周
- Her speech made a tremendous impact on everyone. 她的演说对大家震动很大。
- The front of the car crumpled on impact. 汽车的前部被撞扁了。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- Impact in power frequency variation. 频率变化之影响。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- It's difficult to assess the impact of the President's speech. 总统讲话的巨大影响很难估计。
- The plane flew into a mountain and disintegrated on impact. 飞机冲向一座山,撞得粉碎。
- The impact of the stone against the windowpane shattered the glass. 石头撞击窗户打碎了玻璃。
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- The impact of the report is augmented by its timing. 由于发表的时间选得好,这篇报导的影响更大了。