reciprocal leveling对: answer; reply向: direction水准测量: differential levelling; leve ...双向水准测定: bilateral levelling面水准测量: area leveling; area levelling; grid levelling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:对向水准测量，即可在微信中查询翻译
