saddle type walking beam鞍: saddle; sella形: form; shape步进: step-by-step梁: beam鞍座形步进梁: cradle type walking beam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:鞍形步进梁，即可在微信中查询翻译
