基本解释[经济学]斗式自动装载机英汉例句双语例句The piston of shoe type brake in shovel loader is used to be chrome plated, which is poor in processing efficiency and expansive in cost.装载机蹄式制动器的活塞，一直采用外表面电镀铬工艺，加工效率低，成本高。shovel type loader更多例句词组短语短语shovel l type loader 斗式自动装载机shovel type loader更多词组专业释义经济学斗式自动装载机