有底值的英文

• base value

• 有底:    know how things stand and fe ...
• 值:    price; value
• 有底:    know how things stand and feel confident of handling them; be fully prepared for what is coming 他心里有底, 一点不慌。 he was not at all nervous, for he knew what to expect
• 本底值:    background values◇本底值监测 background value monitoring
• 无底值:    no base value for sonic minesweeping