履帶接地長度 bearing length: 定徑區(qū)長度; 接觸區(qū)長度; 支承長度bearing length of die: 定徑區(qū)長度crawler attachment: 履帶附件; 履帶行走機(jī)構(gòu); 履帶裝置crawler bulldozer: 履帶式攤土機(jī); 履帶式推土機(jī); 履帶推土機(jī)crawler coalcutter: 履帶式截煤機(jī)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯