steel jack

基本解釋

The anchor pile support apparatus for pneumatic caisson includes bearing block, jack, steel bracket, anchor pile and expanded pile head.
本發(fā)明公開了一種氣壓沉箱錨樁支承裝置，包括墊塊、千斤頂，鋼托架，錨樁，樁頂擴大頭。
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.
對于人類如何繼續(xù)對待同類的評價，與你可能從哈里?杜魯門（Harry Truman）口中聽到的一樣不講情面，盡管杰克?肯尼迪（Jack Kennedy）是奧巴馬提到的前輩。
After a summer of work in the country, Jack was as hard as steel.
在鄉(xiāng)下工作了一個夏天后，杰克渾身肌肉結(jié)實。