中文翻译与英英解释 | 【机械工程】轴柱。
| | | jack: 短语和例子 jack3 n. 1.(东南亚等地产的)面包 ... | | post: n. 1.〔主英〕邮政；邮寄；(一批)邮件 (cf.〔美 ... | |
| 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. |
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