steel jack

基本解释

The anchor pile support apparatus for pneumatic caisson includes bearing block, jack, steel bracket, anchor pile and expanded pile head.
本发明公开了一种气压沉箱锚桩支承装置，包括垫块、千斤顶，钢托架，锚桩，桩顶扩大头。
ip.com
It was as hard-nosed an assesment of what humans continue to do to each other as you might have heard from Harry Truman, though the steel-tipped Jack Kennedy was the predecessor invoked.
对于人类如何继续对待同类的评价，与你可能从哈里•杜鲁门（Harry Truman）口中听到的一样不讲情面，尽管杰克•肯尼迪（Jack Kennedy）是奥巴马提到的前辈。
After a summer of work in the country, Jack was as hard as steel.
在乡下工作了一个夏天后，杰克浑身肌肉结实。