jack post中文什么意思

【机械工程】轴柱。

• jack:     jack3 n. 1.( ...
• post:    n. 1.〔主英〕邮政；邮寄；(一批 ...
• trip post jack:    解脱式顶柱

百科释义

A jack post is a steel post used in the construction trades for shoring walls and trenches. The term "jack post" is one of many describing the same system, other names include any assortment of "adjustable", "steel", "jack" and "shoring" with "post", "column" and "prop", depending on their precise construction - the "jack" refers to examples with a jack screw to adjust the precise length of the post.