orderpreserving relation保序: isotone; order-preserving关系: relation; filiation; relatio ...序关系: order relation偏序关系, 半定序关系: partial ordering relation半序关系: partial ordering relation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:保序关系，即可在微信中查询翻译
