autmatic ram pile driver是什么意思

用法例句

Simplified Analysis of Effects on Buildings near the Site Caused by a Vibration-impact Pile Driver during Construction;

振动打桩机施工影响的简化分析

4 kinds of ways of influence analysis on safety of the near building structures were presented by analyzing the theory of vibration-impact pile driver system and the soil vibration.

通过对振动打桩机系统的理论分析和土体振动分析,提出了施工振动对邻近房屋结构安全性影响分析的4种方法。