vertical thread竖: vertical; upright; perpendic ...系: system; series竖线: vertical bar vertical virgule竖腿采油管道: riser leg product piping竖线间距: vertical line spacing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:竖系，即可在微信中查询翻译
