基本解释[經濟學]千斤頂支座英汉例句雙語例句The utility model provides a jacking device for the assembly of a front bracket.本實用新型提供一種前托架裝配頂陞裝置,包括:支架;ip.comjacking bracket更多例句词组短语短語jacking -up bracket 頂陞托架jacking bracket更多词组专业释义經濟學千斤頂支座