Sounding Datum: 2.93 meter below the cross sysmbol + on bench mark, at the northeast of No.18 warehouse.是什么意思_Sounding Datum: 2.93 meter below the cross sysmbol + on bench mark, at the northeast of No.18 warehouse.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句