tower gantry crane塔式: tower-type; step grate龙门起重机: gantry crane固定式龙门起重机: fixed gantry crane; frame crane滑伸式龙门起重机: gantry crane with shuttle girder绞车式龙门起重机: gantry crane with crab下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:塔式龙门起重机，即可在微信中查询翻译
