Category:DB：修订间差异

Double Bottom, 双底。Two consecutive bars with identical lows. Every DB is a H2B, and every H2B is a DB, either term is always correct. If two strong selloffs that reverse up, or two strong reversals up, call it a DB. If one selloff, but 2nd buy signal, like 2nd reversal up from below of LOY or support, call it a H2B. If a selloff tries to reverse twice, it is a H2B; if a 1st selloff fails and bear trend resumes, a 2nd reversal up is a DB. A H2B is just a small DB (usually less than 10 bars).

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