differential-acting pile hammer的意思|示意
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差动式打桩锤
differential-acting pile hammer的网络常见释义
差动打桩锤 ... 差速器大齿轮 differential wheel 差动打桩锤 differential-acting pile hammer 斜齿轮差速器 differential，bevel gear ...
differential-acting pile hammer相关短语
1、 Differential acting pile-hammer 差动桩锤
2、 differential-acting pile-hammer 复动打桩机